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<?php

/**
 * This file takes care of all administration of smileys.
 *
 * Simple Machines Forum (SMF)
 *
 * @package SMF
 * @author Simple Machines https://www.simplemachines.org
 * @copyright 2020 Simple Machines and individual contributors
 * @license https://www.simplemachines.org/about/smf/license.php BSD
 *
 * @version 2.1 RC2
 */

if (!defined('SMF'))
    die('No direct access...');

/**
 * This is the dispatcher of smileys administration.
 */
function ManageSmileys()
{
    global $context, $txt, $modSettings;

    isAllowedTo('manage_smileys');

    loadLanguage('ManageSmileys');
    loadTemplate('ManageSmileys');

    $subActions = array(
        'addsmiley' => 'AddSmiley',
        'editicon' => 'EditMessageIcons',
        'editicons' => 'EditMessageIcons',
        'editsets' => 'EditSmileySets',
        'editsmileys' => 'EditSmileys',
        'import' => 'EditSmileySets',
        'modifyset' => 'EditSmileySets',
        'modifysmiley' => 'EditSmileys',
        'setorder' => 'EditSmileyOrder',
        'settings' => 'EditSmileySettings',
        'install' => 'InstallSmileySet'
    );

    // If customized smileys is disabled don't show the setting page
    if (empty($modSettings['smiley_enable']))
    {
        unset($subActions['addsmiley']);
        unset($subActions['editsmileys']);
        unset($subActions['setorder']);
        unset($subActions['modifysmiley']);
    }
    if (empty($modSettings['messageIcons_enable']))
    {
        unset($subActions['editicon']);
        unset($subActions['editicons']);
    }

    // Default the sub-action to 'edit smiley settings'.
    $_REQUEST['sa'] = isset($_REQUEST['sa']) && isset($subActions[$_REQUEST['sa']]) ? $_REQUEST['sa'] : 'editsets';

    $context['page_title'] = $txt['smileys_manage'];
    $context['sub_action'] = $_REQUEST['sa'];
    $context['sub_template'] = $context['sub_action'];

    // Load up all the tabs...
    $context[$context['admin_menu_name']]['tab_data'] = array(
        'title' => $txt['smileys_manage'],
        'help' => 'smileys',
        'description' => $txt['smiley_settings_explain'],
        'tabs' => array(
            'editsets' => array(
                'description' => $txt['smiley_editsets_explain'],
            ),
            'addsmiley' => array(
                'description' => $txt['smiley_addsmiley_explain'],
            ),
            'editsmileys' => array(
                'description' => $txt['smiley_editsmileys_explain'],
            ),
            'setorder' => array(
                'description' => $txt['smiley_setorder_explain'],
            ),
            'editicons' => array(
                'description' => $txt['icons_edit_icons_explain'],
            ),
            'settings' => array(
                'description' => $txt['smiley_settings_explain'],
            ),
        ),
    );

    // Some settings may not be enabled, disallow these from the tabs as appropriate.
    if (empty($modSettings['messageIcons_enable']))
        $context[$context['admin_menu_name']]['tab_data']['tabs']['editicons']['disabled'] = true;
    if (empty($modSettings['smiley_enable']))
    {
        $context[$context['admin_menu_name']]['tab_data']['tabs']['addsmiley']['disabled'] = true;
        $context[$context['admin_menu_name']]['tab_data']['tabs']['editsmileys']['disabled'] = true;
        $context[$context['admin_menu_name']]['tab_data']['tabs']['setorder']['disabled'] = true;
    }

    call_integration_hook('integrate_manage_smileys', array(&$subActions));

    // Call the right function for this sub-action.
    call_helper($subActions[$_REQUEST['sa']]);
}

/**
 * Handles modifying smileys settings.
 *
 * @param bool $return_config Whether or not to return the config_vars array (used for admin search)
 * @return void|array Returns nothing or returns the $config_vars array if $return_config is true
 */
function EditSmileySettings($return_config = false)
{
    global $modSettings, $context, $txt, $boarddir, $sourcedir, $scripturl;

    // The directories...
    $context['smileys_dir'] = empty($modSettings['smileys_dir']) ? $boarddir . '/Smileys' : $modSettings['smileys_dir'];
    $context['smileys_dir_found'] = is_dir($context['smileys_dir']);

    // Get the names of the smiley sets.
    $smiley_sets = explode(',', $modSettings['smiley_sets_known']);
    $set_names = explode("\n", $modSettings['smiley_sets_names']);

    $smiley_context = array();
    foreach ($smiley_sets as $i => $set)
        $smiley_context[$set] = $set_names[$i];

    // All the settings for the page...
    $config_vars = array(
        array('title', 'settings'),
        // Inline permissions.
        array('permissions', 'manage_smileys'),
        '',

        array('select', 'smiley_sets_default', $smiley_context),
        array('check', 'smiley_sets_enable'),
        array('check', 'smiley_enable', 'subtext' => $txt['smileys_enable_note']),
        array('text', 'smileys_url', 40),
        array('warning', !is_dir($context['smileys_dir']) ? 'setting_smileys_dir_wrong' : ''),
        array('text', 'smileys_dir', 'invalid' => !$context['smileys_dir_found'], 40),
        '',

        // Message icons.
        array('check', 'messageIcons_enable', 'subtext' => $txt['setting_messageIcons_enable_note']),
        array('check', 'messageIconChecks_enable', 'subtext' => $txt['setting_messageIconChecks_enable_note'])
    );

    call_integration_hook('integrate_modify_smiley_settings', array(&$config_vars));

    if ($return_config)
        return $config_vars;

    // Setup the basics of the settings template.
    require_once($sourcedir . '/ManageServer.php');
    $context['sub_template'] = 'show_settings';

    // Finish up the form...
    $context['post_url'] = $scripturl . '?action=admin;area=smileys;save;sa=settings';

    // Saving the settings?
    if (isset($_GET['save']))
    {
        checkSession();

        // Validate the smiley set name.
        $_POST['smiley_sets_default'] = empty($smiley_context[$_POST['smiley_sets_default']]) ? $modSettings['smiley_sets_default'] : $_POST['smiley_sets_default'];

        call_integration_hook('integrate_save_smiley_settings');

        saveDBSettings($config_vars);
        $_SESSION['adm-save'] = true;

        foreach (explode(',', $modSettings['smiley_sets_known']) as $smiley_set)
        {
            cache_put_data('parsing_smileys_' . $smiley_set, null, 480);
            cache_put_data('posting_smileys_' . $smiley_set, null, 480);
        }

        redirectexit('action=admin;area=smileys;sa=settings');
    }

    // We need this for the in-line permissions
    createToken('admin-mp');

    prepareDBSettingContext($config_vars);
}

/**
 * List, add, remove, modify smileys sets.
 */
function EditSmileySets()
{
    global $modSettings, $context, $txt;
    global $smcFunc, $scripturl, $sourcedir;

    // Set the right tab to be selected.
    $context[$context['admin_menu_name']]['current_subsection'] = 'editsets';

    $allowedTypes = array('gif', 'png', 'jpg', 'jpeg', 'tiff', 'svg');

    // They must've been submitted a form.
    if (isset($_POST['smiley_save']))
    {
        checkSession();
        validateToken('admin-mss', 'request');

        // Delete selected smiley sets.
        if (!empty($_POST['delete']) && !empty($_POST['smiley_set']))
        {
            $set_paths = explode(',', $modSettings['smiley_sets_known']);
            $set_names = explode("\n", $modSettings['smiley_sets_names']);
            foreach ($_POST['smiley_set'] as $id => $val)
            {
                // If this is the set you've marked as default, or the only one remaining, you can't delete it
                if ($modSettings['smiley_sets_default'] != $set_paths[$id] && count($set_paths) != 1 && isset($set_paths[$id], $set_names[$id]))
                {
                    // Delete this set's entries from the smiley_files table
                    $smcFunc['db_query']('', '
                        DELETE FROM {db_prefix}smiley_files
                        WHERE smiley_set = {string:smiley_set}',
                        array(
                            'smiley_set' => $set_paths[$id],
                        )
                    );

                    // Remove this set from our lists
                    unset($set_paths[$id], $set_names[$id]);
                }
            }

            // Shortcut... array_merge() on a single array resets the numeric keys
            $set_paths = array_merge($set_paths);
            $set_names = array_merge($set_names);

            updateSettings(array(
                'smiley_sets_known' => implode(',', $set_paths),
                'smiley_sets_names' => implode("\n", $set_names),
                'smiley_sets_default' => in_array($modSettings['smiley_sets_default'], $set_paths) ? $modSettings['smiley_sets_default'] : $set_paths[0],
            ));
        }
        // Add a new smiley set.
        elseif (!empty($_POST['add']))
            $context['sub_action'] = 'modifyset';
        // Create or modify a smiley set.
        elseif (isset($_POST['set']))
        {
            $set_paths = explode(',', $modSettings['smiley_sets_known']);
            $set_names = explode("\n", $modSettings['smiley_sets_names']);

            // Create a new smiley set.
            if ($_POST['set'] == -1 && isset($_POST['smiley_sets_path']))
            {
                if (in_array($_POST['smiley_sets_path'], $set_paths))
                    fatal_lang_error('smiley_set_already_exists');

                updateSettings(array(
                    'smiley_sets_known' => $modSettings['smiley_sets_known'] . ',' . $_POST['smiley_sets_path'],
                    'smiley_sets_names' => $modSettings['smiley_sets_names'] . "\n" . $_POST['smiley_sets_name'],
                    'smiley_sets_default' => empty($_POST['smiley_sets_default']) ? $modSettings['smiley_sets_default'] : $_POST['smiley_sets_path'],
                ));
            }
            // Modify an existing smiley set.
            else
            {
                // Make sure the smiley set exists.
                if (!isset($set_paths[$_POST['set']]) || !isset($set_names[$_POST['set']]))
                    fatal_lang_error('smiley_set_not_found');

                // Make sure the path is not yet used by another smileyset.
                if (in_array($_POST['smiley_sets_path'], $set_paths) && $_POST['smiley_sets_path'] != $set_paths[$_POST['set']])
                    fatal_lang_error('smiley_set_path_already_used');

                $set_paths[$_POST['set']] = $_POST['smiley_sets_path'];
                $set_names[$_POST['set']] = $_POST['smiley_sets_name'];
                updateSettings(array(
                    'smiley_sets_known' => implode(',', $set_paths),
                    'smiley_sets_names' => implode("\n", $set_names),
                    'smiley_sets_default' => empty($_POST['smiley_sets_default']) ? $modSettings['smiley_sets_default'] : $_POST['smiley_sets_path']
                ));
            }

            // Import, but only the ones that match existing smileys
            ImportSmileys($_POST['smiley_sets_path'], false);
        }

        foreach ($set_paths as $smiley_set)
        {
            cache_put_data('parsing_smileys_' . $smiley_set, null, 480);
            cache_put_data('posting_smileys_' . $smiley_set, null, 480);
        }
    }

    // Load all available smileysets...
    $context['smiley_sets'] = explode(',', $modSettings['smiley_sets_known']);
    $set_names = explode("\n", $modSettings['smiley_sets_names']);
    foreach ($context['smiley_sets'] as $i => $set)
        $context['smiley_sets'][$i] = array(
            'id' => $i,
            'raw_path' => $set,
            'path' => $smcFunc['htmlspecialchars']($set),
            'name' => $smcFunc['htmlspecialchars']($set_names[$i]),
            'selected' => $set == $modSettings['smiley_sets_default']
        );

    // Importing any smileys from an existing set?
    if ($context['sub_action'] == 'import')
    {
        checkSession('get');
        validateToken('admin-mss', 'request');

        $_GET['set'] = (int) $_GET['set'];

        // Sanity check - then import.
        if (isset($context['smiley_sets'][$_GET['set']]))
            ImportSmileys(un_htmlspecialchars($context['smiley_sets'][$_GET['set']]['path']), true);

        // Force the process to continue.
        $context['sub_action'] = 'modifyset';
        $context['sub_template'] = 'modifyset';
    }
    // If we're modifying or adding a smileyset, some context info needs to be set.
    if ($context['sub_action'] == 'modifyset')
    {
        $_GET['set'] = !isset($_GET['set']) ? -1 : (int) $_GET['set'];
        if ($_GET['set'] == -1 || !isset($context['smiley_sets'][$_GET['set']]))
            $context['current_set'] = array(
                'id' => '-1',
                'raw_path' => '',
                'path' => '',
                'name' => '',
                'selected' => false,
                'is_new' => true,
            );
        else
        {
            $context['current_set'] = &$context['smiley_sets'][$_GET['set']];
            $context['current_set']['is_new'] = false;

            // Calculate whether there are any smileys in the directory that can be imported.
            if (!empty($modSettings['smiley_enable']) && !empty($modSettings['smileys_dir']) && is_dir($modSettings['smileys_dir'] . '/' . $context['current_set']['path']))
            {
                $smileys = array();
                $dir = dir($modSettings['smileys_dir'] . '/' . $context['current_set']['path']);
                while ($entry = $dir->read())
                {
                    $pathinfo = pathinfo($entry);
                    if (empty($pathinfo['filename']) || empty($pathinfo['extension']))
                        continue;
                    if (in_array($pathinfo['extension'], $allowedTypes) && $pathinfo['filename'] != 'blank')
                        $smileys[strtolower($entry)] = $entry;
                }
                $dir->close();

                if (empty($smileys))
                    fatal_lang_error('smiley_set_dir_not_found', false, array($context['current_set']['name']));

                // Exclude the smileys that are already in the database.
                $request = $smcFunc['db_query']('', '
                    SELECT filename
                    FROM {db_prefix}smiley_files
                    WHERE filename IN ({array_string:smiley_list})
                        AND smiley_set = {string:smiley_set}',
                    array(
                        'smiley_list' => $smileys,
                        'smiley_set' => $context['current_set']['path'],
                    )
                );
                while ($row = $smcFunc['db_fetch_assoc']($request))
                {
                    if (isset($smileys[strtolower($row['filename'])]))
                        unset($smileys[strtolower($row['filename'])]);
                }

                $smcFunc['db_free_result']($request);

                $context['current_set']['can_import'] = count($smileys);
                $context['current_set']['import_url'] = $scripturl . '?action=admin;area=smileys;sa=import;set=' . $context['current_set']['id'] . ';' . $context['session_var'] . '=' . $context['session_id'];
            }
        }

        // Retrieve all potential smiley set directories.
        $context['smiley_set_dirs'] = array();
        if (!empty($modSettings['smileys_dir']) && is_dir($modSettings['smileys_dir']))
        {
            $dir = dir($modSettings['smileys_dir']);
            while ($entry = $dir->read())
            {
                if (!in_array($entry, array('.', '..')) && is_dir($modSettings['smileys_dir'] . '/' . $entry))
                    $context['smiley_set_dirs'][] = array(
                        'id' => $entry,
                        'path' => $modSettings['smileys_dir'] . '/' . $entry,
                        'selectable' => $entry == $context['current_set']['path'] || !in_array($entry, explode(',', $modSettings['smiley_sets_known'])),
                        'current' => $entry == $context['current_set']['path'],
                    );
            }
            $dir->close();
        }
    }

    // This is our save haven.
    createToken('admin-mss', 'request');

    // In case we need to import smileys, we need to add the token in now.
    if (isset($context['current_set']['import_url']))
    {
        $context['current_set']['import_url'] .= ';' . $context['admin-mss_token_var'] . '=' . $context['admin-mss_token'];
        $context['smiley_set_unused_message'] = sprintf($txt['smiley_set_unused'], $scripturl . '?action=admin;area=smileys;sa=editsmileys', $scripturl . '?action=admin;area=smileys;sa=addsmiley', $context['current_set']['import_url']);
    }

    $listOptions = array(
        'id' => 'smiley_set_list',
        'title' => $txt['smiley_sets'],
        'no_items_label' => $txt['smiley_sets_none'],
        'base_href' => $scripturl . '?action=admin;area=smileys;sa=editsets',
        'default_sort_col' => 'name',
        'get_items' => array(
            'function' => 'list_getSmileySets',
        ),
        'get_count' => array(
            'function' => 'list_getNumSmileySets',
        ),
        'columns' => array(
            'default' => array(
                'header' => array(
                    'value' => $txt['smiley_sets_default'],
                    'class' => 'centercol',
                ),
                'data' => array(
                    'function' => function($rowData)
                    {
                        return $rowData['selected'] ? '<span class="main_icons valid"></span>' : '';
                    },
                    'class' => 'centercol',
                ),
                'sort' => array(
                    'default' => 'selected',
                    'reverse' => 'selected DESC',
                ),
            ),
            'name' => array(
                'header' => array(
                    'value' => $txt['smiley_sets_name'],
                ),
                'data' => array(
                    'db_htmlsafe' => 'name',
                ),
                'sort' => array(
                    'default' => 'name',
                    'reverse' => 'name DESC',
                ),
            ),
            'url' => array(
                'header' => array(
                    'value' => $txt['smiley_sets_url'],
                ),
                'data' => array(
                    'sprintf' => array(
                        'format' => $modSettings['smileys_url'] . '/<strong>%1$s</strong>/...',
                        'params' => array(
                            'path' => true,
                        ),
                    ),
                ),
                'sort' => array(
                    'default' => 'path',
                    'reverse' => 'path DESC',
                ),
            ),
            'modify' => array(
                'header' => array(
                    'value' => $txt['smiley_set_modify'],
                    'class' => 'centercol',
                ),
                'data' => array(
                    'sprintf' => array(
                        'format' => '<a href="' . $scripturl . '?action=admin;area=smileys;sa=modifyset;set=%1$d">' . $txt['smiley_set_modify'] . '</a>',
                        'params' => array(
                            'id' => true,
                        ),
                    ),
                    'class' => 'centercol',
                ),
            ),
            'check' => array(
                'header' => array(
                    'value' => '<input type="checkbox" onclick="invertAll(this, this.form);">',
                    'class' => 'centercol',
                ),
                'data' => array(
                    'function' => function($rowData)
                    {
                        return $rowData['selected'] ? '' : sprintf('<input type="checkbox" name="smiley_set[%1$d]">', $rowData['id']);
                    },
                    'class' => 'centercol',
                ),
            ),
        ),
        'form' => array(
            'href' => $scripturl . '?action=admin;area=smileys;sa=editsets',
            'token' => 'admin-mss',
        ),
        'additional_rows' => array(
            array(
                'position' => 'above_table_headers',
                'value' => '<input type="hidden" name="smiley_save"><input type="submit" name="delete" value="' . $txt['smiley_sets_delete'] . '" data-confirm="' . $txt['smiley_sets_confirm'] . '" class="button you_sure"> <a class="button" href="' . $scripturl . '?action=admin;area=smileys;sa=modifyset' . '">' . $txt['smiley_sets_add'] . '</a> ',
            ),
            array(
                'position' => 'below_table_data',
                'value' => '<input type="hidden" name="smiley_save"><input type="submit" name="delete" value="' . $txt['smiley_sets_delete'] . '" data-confirm="' . $txt['smiley_sets_confirm'] . '" class="button you_sure"> <a class="button" href="' . $scripturl . '?action=admin;area=smileys;sa=modifyset' . '">' . $txt['smiley_sets_add'] . '</a> ',
            ),
        ),
    );

    require_once($sourcedir . '/Subs-List.php');
    createList($listOptions);
}

/**
 * Callback function for createList().
 *
 * @todo to be moved to Subs-Smileys?
 *
 * @param int $start The item to start with (not used here)
 * @param int $items_per_page The number of items to show per page (not used here)
 * @param string $sort A string indicating how to sort the results
 * @return array An array of info about the smiley sets
 */
function list_getSmileySets($start, $items_per_page, $sort)
{
    global $modSettings;

    $known_sets = explode(',', $modSettings['smiley_sets_known']);
    $set_names = explode("\n", $modSettings['smiley_sets_names']);
    $cols = array(
        'id' => array(),
        'selected' => array(),
        'path' => array(),
        'name' => array(),
    );
    foreach ($known_sets as $i => $set)
    {
        $cols['id'][] = $i;
        $cols['selected'][] = $set == $modSettings['smiley_sets_default'];
        $cols['path'][] = $set;
        $cols['name'][] = $set_names[$i];
    }
    $sort_flag = strpos($sort, 'DESC') === false ? SORT_ASC : SORT_DESC;
    if (substr($sort, 0, 4) === 'name')
        array_multisort($cols['name'], $sort_flag, SORT_REGULAR, $cols['path'], $cols['selected'], $cols['id']);
    elseif (substr($sort, 0, 4) === 'path')
        array_multisort($cols['path'], $sort_flag, SORT_REGULAR, $cols['name'], $cols['selected'], $cols['id']);
    else
        array_multisort($cols['selected'], $sort_flag, SORT_REGULAR, $cols['path'], $cols['name'], $cols['id']);

    $smiley_sets = array();
    foreach ($cols['id'] as $i => $id)
        $smiley_sets[] = array(
            'id' => $id,
            'path' => $cols['path'][$i],
            'name' => $cols['name'][$i],
            'selected' => $cols['selected'][$i],
        );

    return $smiley_sets;
}

/**
 * Callback function for createList().
 *
 * @todo to be moved to Subs-Smileys?
 * @return int The total number of known smiley sets
 */
function list_getNumSmileySets()
{
    global $modSettings;

    return count(explode(',', $modSettings['smiley_sets_known']));
}

/**
 * Add a smiley, that's right.
 */
function AddSmiley()
{
    global $modSettings, $context, $txt, $boarddir, $smcFunc;

    // Get a list of all known smiley sets.
    $context['smileys_dir'] = empty($modSettings['smileys_dir']) ? $boarddir . '/Smileys' : $modSettings['smileys_dir'];
    $context['smileys_dir_found'] = is_dir($context['smileys_dir']);
    $context['smiley_sets'] = explode(',', $modSettings['smiley_sets_known']);
    $set_names = explode("\n", $modSettings['smiley_sets_names']);
    foreach ($context['smiley_sets'] as $i => $set)
        $context['smiley_sets'][$i] = array(
            'id' => $i,
            'raw_path' => $set,
            'path' => $smcFunc['htmlspecialchars']($set),
            'name' => $smcFunc['htmlspecialchars']($set_names[$i]),
            'selected' => $set == $modSettings['smiley_sets_default']
        );

    // Some useful arrays... types we allow - and ports we don't!
    $allowedTypes = array('gif', 'png', 'jpg', 'jpeg', 'tiff', 'svg');
    $disabledFiles = array('con', 'com1', 'com2', 'com3', 'com4', 'prn', 'aux', 'lpt1', '.htaccess', 'index.php');

    // This will hold the names of the added files for each set
    $filename_array = array();

    // Submitting a form?
    if (isset($_POST[$context['session_var']], $_POST['smiley_code']))
    {
        checkSession();

        $_POST['smiley_code'] = htmltrim__recursive($_POST['smiley_code']);
        $_POST['smiley_location'] = empty($_POST['smiley_location']) || $_POST['smiley_location'] > 2 || $_POST['smiley_location'] < 0 ? 0 : (int) $_POST['smiley_location'];
        $_POST['smiley_filename'] = htmltrim__recursive($_POST['smiley_filename']);

        // Make sure some code was entered.
        if (empty($_POST['smiley_code']))
            fatal_lang_error('smiley_has_no_code');

        // Check whether the new code has duplicates. It should be unique.
        $request = $smcFunc['db_query']('', '
            SELECT id_smiley
            FROM {db_prefix}smileys
            WHERE code = {raw:mysql_binary_statement} {string:smiley_code}',
            array(
                'mysql_binary_statement' => $smcFunc['db_title'] == MYSQL_TITLE ? 'BINARY' : '',
                'smiley_code' => $_POST['smiley_code'],
            )
        );
        if ($smcFunc['db_num_rows']($request) > 0)
            fatal_lang_error('smiley_not_unique');
        $smcFunc['db_free_result']($request);

        // If we are uploading - check all the smiley sets are writable!
        if ($_POST['method'] != 'existing')
        {
            $writeErrors = array();
            foreach ($context['smiley_sets'] as $set)
            {
                if (!is_writable($context['smileys_dir'] . '/' . $set['raw_path']))
                    $writeErrors[] = $set['path'];
            }
            if (!empty($writeErrors))
                fatal_lang_error('smileys_upload_error_notwritable', true, array(implode(', ', $writeErrors)));
        }

        // Uploading just one smiley for all of them?
        if (isset($_POST['sameall']) && isset($_FILES['uploadSmiley']['name']) && $_FILES['uploadSmiley']['name'] != '')
        {
            if (!is_uploaded_file($_FILES['uploadSmiley']['tmp_name']) || (ini_get('open_basedir') == '' && !file_exists($_FILES['uploadSmiley']['tmp_name'])))
                fatal_lang_error('smileys_upload_error');

            // Sorry, no spaces, dots, or anything else but letters allowed.
            $_FILES['uploadSmiley']['name'] = preg_replace(array('/\s/', '/\.[\.]+/', '/[^\w_\.\-]/'), array('_', '.', ''), $_FILES['uploadSmiley']['name']);

            // We only allow image files - it's THAT simple - no messing around here...
            if (!in_array(strtolower(pathinfo($_FILES['uploadSmiley']['name'], PATHINFO_EXTENSION)), $allowedTypes))
                fatal_lang_error('smileys_upload_error_types', false, array(implode(', ', $allowedTypes)));

            // We only need the filename...
            $destName = basename($_FILES['uploadSmiley']['name']);

            // Make sure they aren't trying to upload a nasty file - for their own good here!
            if (in_array(strtolower($destName), $disabledFiles))
                fatal_lang_error('smileys_upload_error_illegal');

            // Check if the file already exists... and if not move it to EVERY smiley set directory.
            $smileyLocation = null;
            foreach ($context['smiley_sets'] as $i => $set)
            {
                // Okay, we're going to put the smiley right here, since it's not there yet!
                if (!file_exists($context['smileys_dir'] . '/' . $context['smiley_sets'][$i]['raw_path']) . '/' . $destName)
                {
                    $smileyLocation = $context['smileys_dir'] . '/' . $context['smiley_sets'][$i]['raw_path'] . '/' . $destName;
                    move_uploaded_file($_FILES['uploadSmiley']['tmp_name'], $smileyLocation);
                    smf_chmod($smileyLocation, 0644);
                    break;
                }
            }

            // Now, we want to move it from there to all the other sets.
            foreach ($context['smiley_sets'] as $j => $set)
            {
                $currentPath = $context['smileys_dir'] . '/' . $context['smiley_sets'][$j]['raw_path'] . '/' . $destName;

                // Copy the first one we made to here, unless it already exists there
                if (!empty($smileyLocation) && !file_exists($currentPath))
                {
                    copy($smileyLocation, $currentPath);
                    smf_chmod($currentPath, 0644);
                }

                // Double-check
                if (!file_exists($currentPath))
                    fatal_lang_error('smiley_not_found');

                // Finally make sure it's saved correctly!
                $filename_array[$context['smiley_sets'][$j]['raw_path']] = $destName;
            }
        }
        // What about uploading several files?
        elseif ($_POST['method'] != 'existing')
        {
            $newName = '';
            foreach ($_FILES as $name => $data)
            {
                if ($_FILES[$name]['name'] == '')
                    fatal_lang_error('smileys_upload_error_blank');

                // if (empty($newName))
                //  $newName = basename($_FILES[$name]['name']);
                // elseif (basename($_FILES[$name]['name']) != $newName)
                //  fatal_lang_error('smileys_upload_error_name');
            }

            foreach ($context['smiley_sets'] as $i => $set)
            {
                $set['name'] = un_htmlspecialchars($set['name']);

                if (!isset($_FILES['individual_' . $set['raw_path']]['name']) || $_FILES['individual_' . $set['raw_path']]['name'] == '')
                    continue;

                // Got one...
                if (!is_uploaded_file($_FILES['individual_' . $set['raw_path']]['tmp_name']) || (ini_get('open_basedir') == '' && !file_exists($_FILES['individual_' . $set['raw_path']]['tmp_name'])))
                    fatal_lang_error('smileys_upload_error');

                // Sorry, no spaces, dots, or anything else but letters allowed.
                $_FILES['individual_' . $set['raw_path']]['name'] = preg_replace(array('/\s/', '/\.[\.]+/', '/[^\w_\.\-]/'), array('_', '.', ''), $_FILES['individual_' . $set['raw_path']]['name']);

                // We only allow image files - it's THAT simple - no messing around here...
                if (!in_array(strtolower(pathinfo($_FILES['individual_' . $set['raw_path']]['name'], PATHINFO_EXTENSION)), $allowedTypes))
                    fatal_lang_error('smileys_upload_error_types', false, array(implode(', ', $allowedTypes)));

                // We only need the filename...
                $destName = basename($_FILES['individual_' . $set['raw_path']]['name']);

                // Make sure they aren't trying to upload a nasty file - for their own good here!
                if (in_array(strtolower($destName), $disabledFiles))
                    fatal_lang_error('smileys_upload_error_illegal');

                // If the file exists - ignore it.
                $smileyLocation = $context['smileys_dir'] . '/' . $set['raw_path'] . '/' . $destName;
                if (!file_exists($smileyLocation))
                {
                    // Finally - move the image!
                    move_uploaded_file($_FILES['individual_' . $set['raw_path']]['tmp_name'], $smileyLocation);
                    smf_chmod($smileyLocation, 0644);
                }

                // Double-check
                if (!file_exists($smileyLocation))
                    fatal_lang_error('smiley_not_found');

                // Should always be saved correctly!
                $filename_array[$set['raw_path']] = $destName;
            }
        }
        // Re-using an existing image
        else
        {
            // Make sure a filename was given
            if (empty($_POST['smiley_filename']))
                fatal_lang_error('smiley_has_no_filename');

            // And make sure it is legitimate
            $pathinfo = pathinfo($_POST['smiley_filename']);

            if (!in_array($pathinfo['extension'], $allowedTypes))
                fatal_lang_error('smileys_upload_error_types', false, array(implode(', ', $allowedTypes)));
            if (strpos($pathinfo['filename'], '.') !== false)
                fatal_lang_error('smileys_upload_error_illegal');
            if (!in_array($pathinfo['dirname'], explode(',', $modSettings['smiley_sets_known'])))
                fatal_lang_error('smiley_set_not_found');
            if (!file_exists($context['smileys_dir'] . '/' . $pathinfo['dirname'] . '/' . $pathinfo['basename']))
                fatal_lang_error('smiley_not_found');

            // Now ensure every set has a file to use for this smiley
            foreach (explode(',', $modSettings['smiley_sets_known']) as $set)
            {
                unset($basename);

                // Check whether any similarly named files exist in the other set's directory
                $similar_files = glob($context['smileys_dir'] . '/' . $set . '/' . $pathinfo['filename'] . '.{' . implode(',', $allowedTypes) . '}', GLOB_BRACE);

                // If there's a similarly named file already there, use it
                if (!empty($similar_files))
                {
                    // Prefer an exact match if there is one
                    foreach ($similar_files as $similar_file)
                    {
                        if (basename($similar_file) == $pathinfo['basename'])
                            $basename = $pathinfo['basename'];
                    }

                    // Same name, different extension
                    if (empty($basename))
                        $basename = basename(reset($similar_files));
                }
                // Otherwise, copy the image to the other set's directory
                else
                {
                    copy($context['smileys_dir'] . '/' . $pathinfo['dirname'] . '/' . $pathinfo['basename'], $context['smileys_dir'] . '/' . $set . '/' . $pathinfo['basename']);
                    smf_chmod($context['smileys_dir'] . '/' . $set . '/' . $pathinfo['basename'], 0644);

                    $basename = $pathinfo['basename'];
                }

                // Double-check that everything went as expected
                if (empty($basename) || !file_exists($context['smileys_dir'] . '/' . $set . '/' . $basename))
                    fatal_lang_error('smiley_not_found');

                // Okay, let's add this one
                $filename_array[$set] = $basename;
            }
        }

        // Find the position on the right.
        $smiley_order = '0';
        if ($_POST['smiley_location'] != 1)
        {
            $request = $smcFunc['db_query']('', '
                SELECT MAX(smiley_order) + 1
                FROM {db_prefix}smileys
                WHERE hidden = {int:smiley_location}
                    AND smiley_row = {int:first_row}',
                array(
                    'smiley_location' => $_POST['smiley_location'],
                    'first_row' => 0,
                )
            );
            list ($smiley_order) = $smcFunc['db_fetch_row']($request);
            $smcFunc['db_free_result']($request);

            if (empty($smiley_order))
                $smiley_order = '0';
        }

        // Add the new smiley to the main smileys table
        $new_id_smiley = $smcFunc['db_insert']('',
            '{db_prefix}smileys',
            array(
                'code' => 'string-30', 'description' => 'string-80', 'hidden' => 'int', 'smiley_order' => 'int',
            ),
            array(
                $_POST['smiley_code'], $_POST['smiley_description'], $_POST['smiley_location'], $smiley_order,
            ),
            array('id_smiley'),
            1
        );

        // Add the filename info to the smiley_files table
        $inserts = array();
        foreach ($filename_array as $set => $basename)
            $inserts[] = array($new_id_smiley, $set, $basename);

        $smcFunc['db_insert']('ignore',
            '{db_prefix}smiley_files',
            array(
                'id_smiley' => 'int', 'smiley_set' => 'string-48', 'filename' => 'string-48',
            ),
            $inserts,
            array('id_smiley', 'smiley_set')
        );

        foreach ($context['smiley_sets'] as $smiley_set)
        {
            cache_put_data('parsing_smileys_' . $smiley_set['raw_path'], null, 480);
            cache_put_data('posting_smileys_' . $smiley_set['raw_path'], null, 480);
        }

        // No errors? Out of here!
        redirectexit('action=admin;area=smileys;sa=editsmileys');
    }

    $context['selected_set'] = $modSettings['smiley_sets_default'];

    // Get all possible filenames for the smileys.
    $context['filenames'] = array();
    if ($context['smileys_dir_found'])
    {
        foreach ($context['smiley_sets'] as $smiley_set)
        {
            if (!file_exists($context['smileys_dir'] . '/' . $smiley_set['raw_path']))
                continue;

            $dir = dir($context['smileys_dir'] . '/' . $smiley_set['raw_path']);
            while ($entry = $dir->read())
            {
                $entry_info = pathinfo($entry);
                if (empty($entry_info['filename']) || empty($entry_info['extension']))
                    continue;
                if (empty($context['filenames'][$smiley_set['path']][strtolower($entry_info['filename'])]) && in_array(strtolower($entry_info['extension']), $allowedTypes))
                    $context['filenames'][$smiley_set['path']][strtolower($entry_info['filename'])] = array(
                        'id' => $smcFunc['htmlspecialchars']($entry),
                        'selected' => $entry_info['filename'] == 'smiley' && $smiley_set['path'] == $context['selected_set'],
                    );
            }
            $dir->close();
            ksort($context['filenames'][$smiley_set['path']]);
        }
        ksort($context['filenames']);
    }

    // Create a new smiley from scratch.
    $context['current_smiley'] = array(
        'id' => 0,
        'code' => '',
        'filename' => $context['filenames'][$smcFunc['htmlspecialchars']($context['selected_set'])]['smiley']['id'],
        'description' => $txt['smileys_default_description'],
        'location' => 0,
        'is_new' => true,
    );
}

/**
 * Add, remove, edit smileys.
 */
function EditSmileys()
{
    global $modSettings, $context, $txt, $boarddir;
    global $smcFunc, $scripturl, $sourcedir;

    // Force the correct tab to be displayed.
    $context[$context['admin_menu_name']]['current_subsection'] = 'editsmileys';

    $allowedTypes = array('gif', 'png', 'jpg', 'jpeg', 'tiff', 'svg');
    $known_sets = explode(',', $modSettings['smiley_sets_known']);

    // Submitting a form?
    if (isset($_POST['smiley_save']) || isset($_POST['smiley_action']) || isset($_POST['deletesmiley']))
    {
        checkSession();

        // Changing the selected smileys?
        if (isset($_POST['smiley_action']) && !empty($_POST['checked_smileys']))
        {
            foreach ($_POST['checked_smileys'] as $id => $smiley_id)
                $_POST['checked_smileys'][$id] = (int) $smiley_id;

            if ($_POST['smiley_action'] == 'delete')
            {
                $smcFunc['db_query']('', '
                    DELETE FROM {db_prefix}smileys
                    WHERE id_smiley IN ({array_int:checked_smileys})',
                    array(
                        'checked_smileys' => $_POST['checked_smileys'],
                    )
                );
                $smcFunc['db_query']('', '
                    DELETE FROM {db_prefix}smiley_files
                    WHERE id_smiley IN ({array_int:checked_smileys})',
                    array(
                        'checked_smileys' => $_POST['checked_smileys'],
                    )
                );
            }
            // Changing the status of the smiley?
            else
            {
                // Check it's a valid type.
                $displayTypes = array(
                    'post' => 0,
                    'hidden' => 1,
                    'popup' => 2
                );
                if (isset($displayTypes[$_POST['smiley_action']]))
                    $smcFunc['db_query']('', '
                        UPDATE {db_prefix}smileys
                        SET hidden = {int:display_type}
                        WHERE id_smiley IN ({array_int:checked_smileys})',
                        array(
                            'checked_smileys' => $_POST['checked_smileys'],
                            'display_type' => $displayTypes[$_POST['smiley_action']],
                        )
                    );
            }
        }
        // Create/modify a smiley.
        elseif (isset($_POST['smiley']))
        {
            // Is it a delete?
            if (!empty($_POST['deletesmiley']) && $_POST['smiley'] == (int) $_POST['smiley'])
            {
                $smcFunc['db_query']('', '
                    DELETE FROM {db_prefix}smileys
                    WHERE id_smiley = {int:current_smiley}',
                    array(
                        'current_smiley' => $_POST['smiley'],
                    )
                );
                $smcFunc['db_query']('', '
                    DELETE FROM {db_prefix}smiley_files
                    WHERE id_smiley = {int:current_smiley}',
                    array(
                        'current_smiley' => $_POST['smiley'],
                    )
                );
            }
            // Otherwise an edit.
            else
            {
                $_POST['smiley'] = (int) $_POST['smiley'];
                $_POST['smiley_code'] = htmltrim__recursive($_POST['smiley_code']);
                $_POST['smiley_location'] = empty($_POST['smiley_location']) || $_POST['smiley_location'] > 2 || $_POST['smiley_location'] < 0 ? 0 : (int) $_POST['smiley_location'];

                // Make sure some code was entered.
                if (empty($_POST['smiley_code']))
                    fatal_lang_error('smiley_has_no_code');

                // Make sure all submitted filenames are clean.
                $filenames = array();
                foreach ($_POST['smiley_filename'] as $posted_set => $posted_filename)
                {
                    $posted_set = htmltrim__recursive($posted_set);
                    $posted_filename = htmltrim__recursive($posted_filename);

                    // Make sure the set already exists.
                    if (!in_array($posted_set, $known_sets))
                        continue;

                    $filenames[$posted_set] = pathinfo($posted_filename, PATHINFO_BASENAME);
                }
                // Fill in any missing sets.
                foreach ($known_sets as $known_set)
                {
                    // Uh-oh, something is missing.
                    if (empty($filenames[$known_set]))
                    {
                        // Try to make it the same as the default set.
                        if (!empty($filenames[$modSettings['smiley_sets_default']]))
                            $filenames[$known_set] = $filenames[$modSettings['smiley_sets_default']];
                        // As a last resort, just try to get whatever the first one is.
                        elseif (!empty($filenames))
                            $filenames[$known_set] = reset($filenames);
                    }
                }

                // Can't do anything without filenames for the smileys.
                if (empty($filenames))
                    fatal_lang_error('smiley_has_no_filename');

                // Check whether the new code has duplicates. It should be unique.
                $request = $smcFunc['db_query']('', '
                    SELECT id_smiley
                    FROM {db_prefix}smileys
                    WHERE code = {raw:mysql_binary_type} {string:smiley_code}' . (empty($_POST['smiley']) ? '' : '
                        AND id_smiley != {int:current_smiley}'),
                    array(
                        'current_smiley' => $_POST['smiley'],
                        'mysql_binary_type' => $smcFunc['db_title'] == MYSQL_TITLE ? 'BINARY' : '',
                        'smiley_code' => $_POST['smiley_code'],
                    )
                );
                if ($smcFunc['db_num_rows']($request) > 0)
                    fatal_lang_error('smiley_not_unique');
                $smcFunc['db_free_result']($request);

                $smcFunc['db_query']('', '
                    UPDATE {db_prefix}smileys
                    SET
                        code = {string:smiley_code},
                        description = {string:smiley_description},
                        hidden = {int:smiley_location}
                    WHERE id_smiley = {int:current_smiley}',
                    array(
                        'smiley_location' => $_POST['smiley_location'],
                        'current_smiley' => $_POST['smiley'],
                        'smiley_code' => $_POST['smiley_code'],
                        'smiley_description' => $_POST['smiley_description'],
                    )
                );

                // Update filename info in the smiley_files table
                $inserts = array();
                foreach ($filenames as $set => $filename)
                    $inserts[] = array($_POST['smiley'], $set, $filename);

                $smcFunc['db_insert']('replace',
                    '{db_prefix}smiley_files',
                    array(
                        'id_smiley' => 'int', 'smiley_set' => 'string-48', 'filename' => 'string-48',
                    ),
                    $inserts,
                    array('id_smiley', 'smiley_set')
                );
            }
        }

        foreach ($known_sets as $smiley_set)
        {
            cache_put_data('parsing_smileys_' . $smiley_set, null, 480);
            cache_put_data('posting_smileys_' . $smiley_set, null, 480);
        }
    }

    // Load all known smiley sets.
    $context['smiley_sets'] = array_flip($known_sets);
    $set_names = explode("\n", $modSettings['smiley_sets_names']);
    foreach ($context['smiley_sets'] as $set => $i)
        $context['smiley_sets'][$set] = array(
            'id' => $i,
            'raw_path' => $set,
            'path' => $smcFunc['htmlspecialchars']($set),
            'name' => $smcFunc['htmlspecialchars']($set_names[$i]),
            'selected' => $set == $modSettings['smiley_sets_default']
        );

    // Prepare overview of all (custom) smileys.
    if ($context['sub_action'] == 'editsmileys')
    {
        // Determine the language specific sort order of smiley locations.
        $smiley_locations = array(
            $txt['smileys_location_form'],
            $txt['smileys_location_hidden'],
            $txt['smileys_location_popup'],
        );
        asort($smiley_locations);

        // Create a list of options for selecting smiley sets.
        $smileyset_option_list = '
            <select name="set" onchange="changeSet(this.options[this.selectedIndex].value);">';
        foreach ($context['smiley_sets'] as $smiley_set)
            $smileyset_option_list .= '
                <option value="' . $smiley_set['path'] . '"' . ($modSettings['smiley_sets_default'] == $smiley_set['path'] ? ' selected' : '') . '>' . $smiley_set['name'] . '</option>';
        $smileyset_option_list .= '
            </select>';

        $listOptions = array(
            'id' => 'smiley_list',
            'title' => $txt['smileys_edit'],
            'items_per_page' => 40,
            'base_href' => $scripturl . '?action=admin;area=smileys;sa=editsmileys',
            'default_sort_col' => 'filename',
            'get_items' => array(
                'function' => 'list_getSmileys',
            ),
            'get_count' => array(
                'function' => 'list_getNumSmileys',
            ),
            'no_items_label' => $txt['smileys_no_entries'],
            'columns' => array(
                'picture' => array(
                    'data' => array(
                        'function' => function($rowData) use ($scripturl, $modSettings, $context)
                        {
                            $return = '';

                            foreach ($rowData['filename_array'] as $set => $filename)
                            {
                                $return .= ' <a href="' . $scripturl . '?action=admin;area=smileys;sa=modifysmiley;smiley=' . $rowData['id_smiley'] . '" class="smiley_set ' . $set . '"><img src="' . $modSettings['smileys_url'] . '/' . $set . '/' . $filename . '" alt="' . $rowData['description'] . '" style="padding: 2px;" id="smiley' . $rowData['id_smiley'] . '"><input type="hidden" name="smileys[' . $rowData['id_smiley'] . '][filename]" value="' . $filename . '"></a>';
                            }

                            return $return;
                        },
                        'class' => 'centercol',
                    ),
                ),
                'smileys_code' => array(
                    'header' => array(
                        'value' => $txt['smileys_code'],
                    ),
                    'data' => array(
                        'db_htmlsafe' => 'code',
                    ),
                    'sort' => array(
                        'default' => 'code',
                        'reverse' => 'code DESC',
                    ),
                ),
                'filename' => array(
                    'header' => array(
                        'value' => $txt['smileys_filename'],
                    ),
                    'data' => array(
                        'function' => function($rowData)
                        {
                            $return = '<span style="display:none">' . $rowData['filename'] . '</span>';

                            foreach ($rowData['filename_array'] as $set => $filename)
                                $return .= ' <span class="smiley_set ' . $set . '">' . $filename . '</span>';

                            return $return;
                        },
                    ),
                    'sort' => array(
                        'default' => 'filename',
                        'reverse' => 'filename DESC',
                    ),
                ),
                'location' => array(
                    'header' => array(
                        'value' => $txt['smileys_location'],
                    ),
                    'data' => array(
                        'function' => function($rowData) use ($txt)
                        {
                            if (empty($rowData['hidden']))
                                return $txt['smileys_location_form'];
                            elseif ($rowData['hidden'] == 1)
                                return $txt['smileys_location_hidden'];
                            else
                                return $txt['smileys_location_popup'];
                        },
                    ),
                    'sort' => array(
                        'default' => $smcFunc['db_custom_order']('hidden', array_keys($smiley_locations)),
                        'reverse' => $smcFunc['db_custom_order']('hidden', array_keys($smiley_locations), true),
                    ),
                ),
                'description' => array(
                    'header' => array(
                        'value' => $txt['smileys_description'],
                    ),
                    'data' => array(
                        'function' => function($rowData) use ($context, $txt, $modSettings, $smcFunc)
                        {
                            if (empty($modSettings['smileys_dir']) || !is_dir($modSettings['smileys_dir']))
                                return $smcFunc['htmlspecialchars']($rowData['description']);

                            // Check if there are smileys missing in some sets.
                            $missing_sets = array();
                            foreach ($context['smiley_sets'] as $smiley_set)
                                if (empty($rowData['filename_array'][$smiley_set['path']]) || !file_exists(sprintf('%1$s/%2$s/%3$s', $modSettings['smileys_dir'], $smiley_set['path'], $rowData['filename_array'][$smiley_set['path']])))
                                    $missing_sets[] = $smiley_set['path'];

                            $description = $smcFunc['htmlspecialchars']($rowData['description']);

                            if (!empty($missing_sets))
                                $description .= sprintf('<br><span class="smalltext"><strong>%1$s:</strong> %2$s</span>', $txt['smileys_not_found_in_set'], implode(', ', $missing_sets));

                            return $description;
                        },
                    ),
                    'sort' => array(
                        'default' => 'description',
                        'reverse' => 'description DESC',
                    ),
                ),
                'modify' => array(
                    'header' => array(
                        'value' => $txt['smileys_modify'],
                        'class' => 'centercol',
                    ),
                    'data' => array(
                        'sprintf' => array(
                            'format' => '<a href="' . $scripturl . '?action=admin;area=smileys;sa=modifysmiley;smiley=%1$d">' . $txt['smileys_modify'] . '</a>',
                            'params' => array(
                                'id_smiley' => false,
                            ),
                        ),
                        'class' => 'centercol',
                    ),
                ),
                'check' => array(
                    'header' => array(
                        'value' => '<input type="checkbox" onclick="invertAll(this, this.form);">',
                        'class' => 'centercol',
                    ),
                    'data' => array(
                        'sprintf' => array(
                            'format' => '<input type="checkbox" name="checked_smileys[]" value="%1$d">',
                            'params' => array(
                                'id_smiley' => false,
                            ),
                        ),
                        'class' => 'centercol',
                    ),
                ),
            ),
            'form' => array(
                'href' => $scripturl . '?action=admin;area=smileys;sa=editsmileys',
                'name' => 'smileyForm',
            ),
            'additional_rows' => array(
                array(
                    'position' => 'above_column_headers',
                    'value' => $smileyset_option_list,
                    'class' => 'righttext',
                ),
                array(
                    'position' => 'below_table_data',
                    'value' => '
                        <select name="smiley_action" onchange="makeChanges(this.value);">
                            <option value="-1">' . $txt['smileys_with_selected'] . ':</option>
                            <option value="-1" disabled>--------------</option>
                            <option value="hidden">' . $txt['smileys_make_hidden'] . '</option>
                            <option value="post">' . $txt['smileys_show_on_post'] . '</option>
                            <option value="popup">' . $txt['smileys_show_on_popup'] . '</option>
                            <option value="delete">' . $txt['smileys_remove'] . '</option>
                        </select>
                        <noscript>
                            <input type="submit" name="perform_action" value="' . $txt['go'] . '" class="button">
                        </noscript>',
                    'class' => 'righttext',
                ),
            ),
            'javascript' => '
                function makeChanges(action)
                {
                    if (action == \'-1\')
                        return false;
                    else if (action == \'delete\')
                    {
                        if (confirm(\'' . $txt['smileys_confirm'] . '\'))
                            document.forms.smileyForm.submit();
                    }
                    else
                        document.forms.smileyForm.submit();
                    return true;
                }
                function changeSet(newSet)
                {
                    $(".smiley_set").hide();
                    $(".smiley_set." + newSet).show();
                }',
        );

        require_once($sourcedir . '/Subs-List.php');
        createList($listOptions);

        // The list is the only thing to show, so make it the main template.
        $context['default_list'] = 'smiley_list';
        $context['sub_template'] = 'show_list';

        addInlineJavaScript("\n\t" . 'changeSet("' . $modSettings['smiley_sets_default'] . '");', true);
    }
    // Modifying smileys.
    elseif ($context['sub_action'] == 'modifysmiley')
    {
        $context['smileys_dir'] = empty($modSettings['smileys_dir']) ? $boarddir . '/Smileys' : $modSettings['smileys_dir'];
        $context['smileys_dir_found'] = is_dir($context['smileys_dir']);

        $context['selected_set'] = $modSettings['smiley_sets_default'];

        $request = $smcFunc['db_query']('', '
            SELECT s.id_smiley AS id, s.code, f.filename, f.smiley_set, s.description, s.hidden AS location
            FROM {db_prefix}smileys AS s
                JOIN {db_prefix}smiley_files AS f ON (s.id_smiley = f.id_smiley)
            WHERE s.id_smiley = {int:current_smiley}',
            array(
                'current_smiley' => (int) $_REQUEST['smiley'],
            )
        );
        while ($row = $smcFunc['db_fetch_assoc']($request))
        {
            // The empty() bit is for just in case the default set is missing this smiley
            if ($row['smiley_set'] == $context['selected_set'] || empty($context['current_smiley']))
                $context['current_smiley'] = $row;

            $filenames[$row['smiley_set']] = $row['filename'];
        }
        $smcFunc['db_free_result']($request);

        if (empty($context['current_smiley']))
            fatal_lang_error('smiley_not_found');

        $context['current_smiley']['code'] = $smcFunc['htmlspecialchars']($context['current_smiley']['code']);
        $context['current_smiley']['description'] = $smcFunc['htmlspecialchars']($context['current_smiley']['description']);
        $context['current_smiley']['filename'] = $smcFunc['htmlspecialchars']($context['current_smiley']['filename']);

        // Get all possible filenames for the smileys.
        $context['filenames'] = array();
        $context['missing_sets'] = array();
        if ($context['smileys_dir_found'])
        {
            foreach ($context['smiley_sets'] as $smiley_set)
            {
                if (!file_exists($context['smileys_dir'] . '/' . $smiley_set['raw_path']))
                    continue;

                // No file currently defined for this smiley in this set? That's no good.
                if (!isset($filenames[$smiley_set['raw_path']]))
                {
                    $context['missing_sets'][] = $smiley_set['raw_path'];
                    $context['filenames'][$smiley_set['path']][''] = array('id' => '', 'selected' => true, 'disabled' => true);
                }

                $dir = dir($context['smileys_dir'] . '/' . $smiley_set['raw_path']);
                while ($entry = $dir->read())
                {
                    if (empty($context['filenames'][$smiley_set['path']][$entry]) && in_array(pathinfo($entry, PATHINFO_EXTENSION), $allowedTypes))
                        $context['filenames'][$smiley_set['path']][$entry] = array(
                            'id' => $smcFunc['htmlspecialchars']($entry),
                            'selected' => isset($filenames[$smiley_set['raw_path']]) && strtolower($entry) == strtolower($filenames[$smiley_set['raw_path']]),
                            'disabled' => false,
                        );
                }
                $dir->close();
                ksort($context['filenames'][$smiley_set['path']]);
            }
            ksort($context['filenames']);
        }
    }
}

/**
 * Callback function for createList().
 *
 * @param int $start The item to start with (not used here)
 * @param int $items_per_page The number of items to show per page (not used here)
 * @param string $sort A string indicating how to sort the results
 * @return array An array of info about the smileys
 */
function list_getSmileys($start, $items_per_page, $sort)
{
    global $smcFunc, $modSettings;

    $request = $smcFunc['db_query']('', '
        SELECT s.id_smiley, s.code, f.filename, f.smiley_set, s.description, s.smiley_row, s.smiley_order, s.hidden
        FROM {db_prefix}smileys AS s
            JOIN {db_prefix}smiley_files AS f ON (s.id_smiley = f.id_smiley)
        ORDER BY {raw:sort}',
        array(
            'sort' => $sort,
        )
    );
    $smileys = array();
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        if (empty($smileys[$row['id_smiley']]))
        {
            $smileys[$row['id_smiley']] = $row;
            unset($smileys[$row['id_smiley']]['smiley_set']);
            $smileys[$row['id_smiley']]['filename_array'] = array($row['smiley_set'] => $row['filename']);
        }
        else
        {
            $smileys[$row['id_smiley']]['filename_array'][$row['smiley_set']] = $row['filename'];
        }

        // Use the filename for the default set as the primary filename for this smiley
        if (isset($smileys[$row['id_smiley']]['filename_array'][$modSettings['smiley_sets_default']]))
            $smileys[$row['id_smiley']]['filename'] = $smileys[$row['id_smiley']]['filename_array'][$modSettings['smiley_sets_default']];
        else
            $smileys[$row['id_smiley']]['filename'] = reset($smileys[$row['id_smiley']]['filename_array']);
    }
    $smcFunc['db_free_result']($request);

    return $smileys;
}

/**
 * Callback function for createList().
 *
 * @return int The number of smileys
 */
function list_getNumSmileys()
{
    global $smcFunc;

    $request = $smcFunc['db_query']('', '
        SELECT COUNT(*)
        FROM {db_prefix}smileys',
        array()
    );
    list($numSmileys) = $smcFunc['db_fetch_row'];
    $smcFunc['db_free_result']($request);

    return $numSmileys;
}

/**
 * Allows to edit smileys order.
 */
function EditSmileyOrder()
{
    global $context, $txt, $smcFunc, $modSettings;

    // Move smileys to another position.
    if (isset($_REQUEST['reorder']))
    {
        checkSession('get');

        $_GET['location'] = empty($_GET['location']) || $_GET['location'] != 'popup' ? 0 : 2;
        $_GET['source'] = empty($_GET['source']) ? 0 : (int) $_GET['source'];

        if (empty($_GET['source']))
            fatal_lang_error('smiley_not_found');

        if (!empty($_GET['after']))
        {
            $_GET['after'] = (int) $_GET['after'];

            $request = $smcFunc['db_query']('', '
                SELECT smiley_row, smiley_order, hidden
                FROM {db_prefix}smileys
                WHERE hidden = {int:location}
                    AND id_smiley = {int:after_smiley}',
                array(
                    'location' => $_GET['location'],
                    'after_smiley' => $_GET['after'],
                )
            );
            if ($smcFunc['db_num_rows']($request) != 1)
                fatal_lang_error('smiley_not_found');
            list ($smiley_row, $smiley_order, $smileyLocation) = $smcFunc['db_fetch_row']($request);
            $smcFunc['db_free_result']($request);
        }
        else
        {
            $smiley_row = (int) $_GET['row'];
            $smiley_order = -1;
            $smileyLocation = (int) $_GET['location'];
        }

        $smcFunc['db_query']('', '
            UPDATE {db_prefix}smileys
            SET smiley_order = smiley_order + 1
            WHERE hidden = {int:new_location}
                AND smiley_row = {int:smiley_row}
                AND smiley_order > {int:smiley_order}',
            array(
                'new_location' => $_GET['location'],
                'smiley_row' => $smiley_row,
                'smiley_order' => $smiley_order,
            )
        );

        $smcFunc['db_query']('', '
            UPDATE {db_prefix}smileys
            SET
                smiley_order = {int:smiley_order} + 1,
                smiley_row = {int:smiley_row},
                hidden = {int:new_location}
            WHERE id_smiley = {int:current_smiley}',
            array(
                'smiley_order' => $smiley_order,
                'smiley_row' => $smiley_row,
                'new_location' => $smileyLocation,
                'current_smiley' => $_GET['source'],
            )
        );

        foreach (explode(',', $modSettings['smiley_sets_known']) as $smiley_set)
        {
            cache_put_data('parsing_smileys_' . $smiley_set, null, 480);
            cache_put_data('posting_smileys_' . $smiley_set, null, 480);
        }
    }

    $request = $smcFunc['db_query']('', '
        SELECT s.id_smiley, s.code, f.filename, s.description, s.smiley_row, s.smiley_order, s.hidden
        FROM {db_prefix}smileys AS s
            JOIN {db_prefix}smiley_files AS f ON (s.id_smiley = f.id_smiley)
        WHERE s.hidden != {int:popup}
            AND f.smiley_set = {string:smiley_set}
        ORDER BY s.smiley_order, s.smiley_row',
        array(
            'popup' => 1,
            'smiley_set' => $modSettings['smiley_sets_default'],
        )
    );
    $context['smileys'] = array(
        'postform' => array(
            'rows' => array(),
        ),
        'popup' => array(
            'rows' => array(),
        ),
    );
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        $location = empty($row['hidden']) ? 'postform' : 'popup';
        $context['smileys'][$location]['rows'][$row['smiley_row']][] = array(
            'id' => $row['id_smiley'],
            'code' => $smcFunc['htmlspecialchars']($row['code']),
            'filename' => $smcFunc['htmlspecialchars']($row['filename']),
            'description' => $smcFunc['htmlspecialchars']($row['description']),
            'row' => $row['smiley_row'],
            'order' => $row['smiley_order'],
            'selected' => !empty($_REQUEST['move']) && $_REQUEST['move'] == $row['id_smiley'],
        );
    }
    $smcFunc['db_free_result']($request);

    $context['move_smiley'] = empty($_REQUEST['move']) ? 0 : (int) $_REQUEST['move'];

    // Make sure all rows are sequential.
    foreach (array_keys($context['smileys']) as $location)
        $context['smileys'][$location] = array(
            'id' => $location,
            'title' => $location == 'postform' ? $txt['smileys_location_form'] : $txt['smileys_location_popup'],
            'description' => $location == 'postform' ? $txt['smileys_location_form_description'] : $txt['smileys_location_popup_description'],
            'last_row' => count($context['smileys'][$location]['rows']),
            'rows' => array_values($context['smileys'][$location]['rows']),
        );

    // Check & fix smileys that are not ordered properly in the database.
    foreach (array_keys($context['smileys']) as $location)
    {
        foreach ($context['smileys'][$location]['rows'] as $id => $smiley_row)
        {
            // Fix empty rows if any.
            if ($id != $smiley_row[0]['row'])
            {
                $smcFunc['db_query']('', '
                    UPDATE {db_prefix}smileys
                    SET smiley_row = {int:new_row}
                    WHERE smiley_row = {int:current_row}
                        AND hidden = {int:location}',
                    array(
                        'new_row' => $id,
                        'current_row' => $smiley_row[0]['row'],
                        'location' => $location == 'postform' ? '0' : '2',
                    )
                );
                // Only change the first row value of the first smiley (we don't need the others :P).
                $context['smileys'][$location]['rows'][$id][0]['row'] = $id;
            }
            // Make sure the smiley order is always sequential.
            foreach ($smiley_row as $order_id => $smiley)
                if ($order_id != $smiley['order'])
                    $smcFunc['db_query']('', '
                        UPDATE {db_prefix}smileys
                        SET smiley_order = {int:new_order}
                        WHERE id_smiley = {int:current_smiley}',
                        array(
                            'new_order' => $order_id,
                            'current_smiley' => $smiley['id'],
                        )
                    );
        }
    }

    foreach (explode(',', $modSettings['smiley_sets_known']) as $smiley_set)
    {
        cache_put_data('parsing_smileys_' . $smiley_set, null, 480);
        cache_put_data('posting_smileys_' . $smiley_set, null, 480);
    }
}

/**
 * Install a smiley set.
 */
function InstallSmileySet()
{
    global $sourcedir, $boarddir, $packagesdir, $modSettings, $smcFunc, $scripturl, $context, $txt, $user_info;

    isAllowedTo('manage_smileys');
    checkSession('request');
    // One of these two may be necessary
    loadLanguage('Errors');
    loadLanguage('Packages');

    require_once($sourcedir . '/Subs-Package.php');

    // Installing unless proven otherwise
    $testing = false;

    if (isset($_REQUEST['set_gz']))
    {
        $base_name = strtr(basename($_REQUEST['set_gz']), ':/', '-_');
        $name = $smcFunc['htmlspecialchars'](strtok(basename($_REQUEST['set_gz']), '.'));
        $context['filename'] = $base_name;

        // Check that the smiley is from simplemachines.org, for now... maybe add mirroring later.
        // @ TODO: Our current xml files serve http links.  Allowing both for now until we serve https.
        if (preg_match('~^https?://[\w_\-]+\.simplemachines\.org/~', $_REQUEST['set_gz']) == 0 || strpos($_REQUEST['set_gz'], 'dlattach') !== false)
            fatal_lang_error('not_on_simplemachines');

        $destination = $packagesdir . '/' . $base_name;

        if (file_exists($destination))
            fatal_lang_error('package_upload_error_exists');

        // Let's copy it to the Packages directory
        file_put_contents($destination, fetch_web_data($_REQUEST['set_gz']));
        $testing = true;
    }
    elseif (isset($_REQUEST['package']))
    {
        $base_name = basename($_REQUEST['package']);
        $name = $smcFunc['htmlspecialchars'](strtok(basename($_REQUEST['package']), '.'));
        $context['filename'] = $base_name;

        $destination = $packagesdir . '/' . basename($_REQUEST['package']);
    }

    if (empty($destination) || !file_exists($destination))
        fatal_lang_error('package_no_file', false);

    // Make sure temp directory exists and is empty.
    if (file_exists($packagesdir . '/temp'))
        deltree($packagesdir . '/temp', false);

    if (!mktree($packagesdir . '/temp', 0755))
    {
        deltree($packagesdir . '/temp', false);
        if (!mktree($packagesdir . '/temp', 0777))
        {
            deltree($packagesdir . '/temp', false);
            // @todo not sure about url in destination_url
            create_chmod_control(array($packagesdir . '/temp/delme.tmp'), array('destination_url' => $scripturl . '?action=admin;area=smileys;sa=install;set_gz=' . $_REQUEST['set_gz'], 'crash_on_error' => true));

            deltree($packagesdir . '/temp', false);
            if (!mktree($packagesdir . '/temp', 0777))
                fatal_lang_error('package_cant_download', false);
        }
    }

    $extracted = read_tgz_file($destination, $packagesdir . '/temp');
    if (!$extracted)
        fatal_lang_error('packageget_unable', false, array('https://custom.simplemachines.org/mods/index.php?action=search;type=12;basic_search=' . $name));
    if ($extracted && !file_exists($packagesdir . '/temp/package-info.xml'))
        foreach ($extracted as $file)
            if (basename($file['filename']) == 'package-info.xml')
            {
                $base_path = dirname($file['filename']) . '/';
                break;
            }

    if (!isset($base_path))
        $base_path = '';

    if (!file_exists($packagesdir . '/temp/' . $base_path . 'package-info.xml'))
        fatal_lang_error('package_get_error_missing_xml', false);

    $smileyInfo = getPackageInfo($context['filename']);
    if (!is_array($smileyInfo))
        fatal_lang_error($smileyInfo);

    // See if it is installed?
    $request = $smcFunc['db_query']('', '
        SELECT version, themes_installed, db_changes
        FROM {db_prefix}log_packages
        WHERE package_id = {string:current_package}
            AND install_state != {int:not_installed}
        ORDER BY time_installed DESC
        LIMIT 1',
        array(
            'not_installed' => 0,
            'current_package' => $smileyInfo['id'],
        )
    );

    if ($smcFunc['db_num_rows']($request) > 0)
        fatal_lang_error('package_installed_warning1');

    // Everything is fine, now it's time to do something
    $actions = parsePackageInfo($smileyInfo['xml'], true, 'install');

    $context['post_url'] = $scripturl . '?action=admin;area=smileys;sa=install;package=' . $base_name;
    $context['has_failure'] = false;
    $context['actions'] = array();
    $context['ftp_needed'] = false;

    foreach ($actions as $action)
    {
        if ($action['type'] == 'readme' || $action['type'] == 'license')
        {
            $type = 'package_' . $action['type'];
            if (file_exists($packagesdir . '/temp/' . $base_path . $action['filename']))
                $context[$type] = $smcFunc['htmlspecialchars'](trim(file_get_contents($packagesdir . '/temp/' . $base_path . $action['filename']), "\n\r"));
            elseif (file_exists($action['filename']))
                $context[$type] = $smcFunc['htmlspecialchars'](trim(file_get_contents($action['filename']), "\n\r"));

            if (!empty($action['parse_bbc']))
            {
                require_once($sourcedir . '/Subs-Post.php');
                preparsecode($context[$type]);
                $context[$type] = parse_bbc($context[$type]);
            }
            else
                $context[$type] = nl2br($context[$type]);

            continue;
        }
        elseif ($action['type'] == 'require-dir')
        {
            // Do this one...
            $thisAction = array(
                'type' => $txt['package_extract'] . ' ' . ($action['type'] == 'require-dir' ? $txt['package_tree'] : $txt['package_file']),
                'action' => $smcFunc['htmlspecialchars'](strtr($action['destination'], array($boarddir => '.')))
            );

            $file = $packagesdir . '/temp/' . $base_path . $action['filename'];
            if (isset($action['filename']) && (!file_exists($file) || !is_writable(dirname($action['destination']))))
            {
                $context['has_failure'] = true;

                $thisAction += array(
                    'description' => $txt['package_action_error'],
                    'failed' => true,
                );
            }
            // @todo None given?
            if (empty($thisAction['description']))
                $thisAction['description'] = isset($action['description']) ? $action['description'] : '';

            $context['actions'][] = $thisAction;
        }
        elseif ($action['type'] == 'credits')
        {
            // Time to build the billboard
            $credits_tag = array(
                'url' => $action['url'],
                'license' => $action['license'],
                'copyright' => $action['copyright'],
                'title' => $action['title'],
            );
        }
    }

    if ($testing)
    {
        $context['sub_template'] = 'view_package';
        $context['uninstalling'] = false;
        $context['is_installed'] = false;
        $context['package_name'] = $smileyInfo['name'];
        loadTemplate('Packages');
    }
    // Do the actual install
    else
    {
        // @TODO Does this call have side effects? ($actions is not used)
        $actions = parsePackageInfo($smileyInfo['xml'], false, 'install');
        foreach ($context['actions'] as $action)
        {
            updateSettings(array(
                'smiley_sets_known' => $modSettings['smiley_sets_known'] . ',' . basename($action['action']),
                'smiley_sets_names' => $modSettings['smiley_sets_names'] . "\n" . $smileyInfo['name'] . (count($context['actions']) > 1 ? ' ' . (!empty($action['description']) ? $smcFunc['htmlspecialchars']($action['description']) : basename($action['action'])) : ''),
            ));
        }

        package_flush_cache();

        // Credits tag?
        $credits_tag = (empty($credits_tag)) ? '' : $smcFunc['json_encode']($credits_tag);
        $smcFunc['db_insert']('',
            '{db_prefix}log_packages',
            array(
                'filename' => 'string', 'name' => 'string', 'package_id' => 'string', 'version' => 'string',
                'id_member_installed' => 'int', 'member_installed' => 'string', 'time_installed' => 'int',
                'install_state' => 'int', 'failed_steps' => 'string', 'themes_installed' => 'string',
                'member_removed' => 'int', 'db_changes' => 'string', 'credits' => 'string',
            ),
            array(
                $smileyInfo['filename'], $smileyInfo['name'], $smileyInfo['id'], $smileyInfo['version'],
                $user_info['id'], $user_info['name'], time(),
                1, '', '',
                0, '', $credits_tag,
            ),
            array('id_install')
        );

        logAction('install_package', array('package' => $smcFunc['htmlspecialchars']($smileyInfo['name']), 'version' => $smcFunc['htmlspecialchars']($smileyInfo['version'])), 'admin');

        foreach (explode(',', $modSettings['smiley_sets_known']) as $smiley_set)
        {
            cache_put_data('parsing_smileys_' . $smiley_set, null, 480);
            cache_put_data('posting_smileys_' . $smiley_set, null, 480);
        }
    }

    if (file_exists($packagesdir . '/temp'))
        deltree($packagesdir . '/temp');

    if (!$testing)
        redirectexit('action=admin;area=smileys');
}

/**
 * A function to import new smileys from an existing directory into the database.
 *
 * @param string $smileyPath The path to the directory to import smileys from
 * @param bool $create Whether or not to make brand new smileys for files that don't match any existing smileys
 */
function ImportSmileys($smileyPath, $create = false)
{
    global $modSettings, $smcFunc;

    if (empty($modSettings['smileys_dir']) || !is_dir($modSettings['smileys_dir'] . '/' . $smileyPath))
        fatal_lang_error('smiley_set_unable_to_import');

    $allowedTypes = array('gif', 'png', 'jpg', 'jpeg', 'tiff', 'svg');
    $known_sets = explode(',', $modSettings['smiley_sets_known']);
    sort($known_sets);

    // Get the smileys in the folder
    $smileys = array();
    $dir = dir($modSettings['smileys_dir'] . '/' . $smileyPath);
    while ($entry = $dir->read())
    {
        $pathinfo = pathinfo($entry);
        if (empty($pathinfo['filename']) || empty($pathinfo['extension']))
            continue;
        if (in_array($pathinfo['extension'], $allowedTypes) && $pathinfo['filename'] != 'blank' && strlen($pathinfo['basename']) <= 48)
            $smiley_files[strtolower($pathinfo['basename'])] = $pathinfo['basename'];
    }
    $dir->close();

    // Get the smileys that are already in the database.
    $existing_smileys = array();
    $request = $smcFunc['db_query']('', '
        SELECT id_smiley, smiley_set, filename
        FROM {db_prefix}smiley_files',
        array()
    );
    while ($row = $smcFunc['db_fetch_assoc']($request))
        $existing_smileys[pathinfo($row['filename'], PATHINFO_FILENAME)][$row['id_smiley']][] = $row['smiley_set'];
    $smcFunc['db_free_result']($request);

    // Filter $smiley_files down to just the ones not already in the database.
    $to_unset = array();
    $to_fix = array();
    foreach ($smiley_files as $key => $smiley_file)
    {
        $smiley_name = pathinfo($smiley_file, PATHINFO_FILENAME);

        // A brand new one
        if (empty($existing_smileys[$smiley_name]))
            continue;

        // A file with this name is already being used for at least one smiley, so we have more work to do...
        foreach ($existing_smileys[$smiley_name] as $existing_id => $existing_sets)
        {
            $to_unset[$key][$existing_id] = false;

            sort($existing_sets);

            // Already done
            if ($existing_sets === $known_sets)
                $to_unset[$key][$existing_id] = true;

            // Used in some sets but not others
            else
            {
                // Do the other sets have some other file already defined?
                foreach ($existing_smileys as $file => $info)
                {
                    foreach ($info as $info_id => $info_sets)
                    {
                        if ($existing_id == $info_id)
                            $existing_sets = array_unique(array_merge($existing_sets, $info_sets));
                    }
                }
                sort($existing_sets);

                // If every set already has a file for this smiley, we can skip it
                if ($known_sets == $existing_sets)
                    $to_unset[$key][$existing_id] = true;

                // Need to add the file for these sets
                else
                    $to_fix[$key][$existing_id] = array_diff($known_sets, $existing_sets);
            }
        }
    }

    // Fix any sets with missing files
    // This part handles files for pre-existing smileys in a newly created smiley set
    $inserts = array();
    foreach ($to_fix as $key => $ids)
    {
        foreach ($ids as $id_smiley => $sets_missing)
        {
            // Find the file we need to copy to the other sets
            if (file_exists($modSettings['smileys_dir'] . '/' . $smileyPath . '/' . $smiley_files[$key]))
                $p = $smileyPath;
            else
            {
                foreach (array_diff($known_sets, $sets_missing) as $set)
                {
                    if (file_exists($modSettings['smileys_dir'] . '/' . $set . '/' . $smiley_files[$key]))
                    {
                        $p = $set;
                        break;
                    }
                }
            }

            foreach ($sets_missing as $set)
            {
                if ($set !== $p)
                {
                    // Copy the file into the set's folder
                    copy($modSettings['smileys_dir'] . '/' . $p . '/' . $smiley_files[$key], $modSettings['smileys_dir'] . '/' . $set . '/' . $smiley_files[$key]);
                    smf_chmod($modSettings['smileys_dir'] . '/' . $set . '/' . $smiley_files[$key], 0644);
                }

                // Double-check that everything went as expected
                if (!file_exists($modSettings['smileys_dir'] . '/' . $set . '/' . $smiley_files[$key]))
                    continue;

                // Update the database
                $inserts[] = array($id_smiley, $set, $smiley_files[$key]);

                // This isn't a new smiley
                $to_unset[$key][$id_smiley] = true;
            }
        }
    }

    // Remove anything that isn't actually new from our list of files
    foreach ($to_unset as $key => $ids)
    {
        if (array_reduce($ids, function ($carry, $item) { return $carry * $item; }, true) == true)
            unset($smiley_files[$key]);
    }

    // We only create brand new smileys if asked.
    if (empty($create))
        $smiley_files = array();

    // New smileys go at the end of the list
    $request = $smcFunc['db_query']('', '
        SELECT MAX(smiley_order)
        FROM {db_prefix}smileys
        WHERE hidden = {int:postform}
            AND smiley_row = {int:first_row}',
        array(
            'postform' => 0,
            'first_row' => 0,
        )
    );
    list ($smiley_order) = $smcFunc['db_fetch_row']($request);
    $smcFunc['db_free_result']($request);

    // This part handles brand new smileys that don't exist in any set
    $new_smileys = array();
    foreach ($smiley_files as $key => $smiley_file)
    {
        // Ensure every set has a file to use for the new smiley
        foreach ($known_sets as $set)
        {
            unset($basename);

            if ($smileyPath != $set)
            {
                // Check whether any similarly named files exist in the other set's directory
                $similar_files = glob($modSettings['smileys_dir'] . '/' . $set . '/' . pathinfo($smiley_file, PATHINFO_FILENAME) . '.{' . implode(',', $allowedTypes) . '}', GLOB_BRACE);

                // If there's a similarly named file already there, use it
                if (!empty($similar_files))
                {
                    // Prefer an exact match if there is one
                    foreach ($similar_files as $similar_file)
                    {
                        if (basename($similar_file) == $smiley_file)
                            $basename = $smiley_file;
                    }

                    // Same name, different extension
                    if (empty($basename))
                        $basename = basename(reset($similar_files));
                }
                // Otherwise, copy the image to the other set's directory
                else
                {
                    copy($modSettings['smileys_dir'] . '/' . $smileyPath . '/' . $smiley_file, $modSettings['smileys_dir'] . '/' . $set . '/' . $smiley_file);
                    smf_chmod($modSettings['smileys_dir'] . '/' . $set . '/' . $smiley_file, 0644);

                    $basename = $smiley_file;
                }

                // Double-check that everything went as expected
                if (empty($basename) || !file_exists($modSettings['smileys_dir'] . '/' . $set . '/' . $basename))
                    continue;
            }
            else
                $basename = $smiley_file;

            $new_smileys[$key]['files'][$set] = $basename;
        }

        $new_smileys[$key]['info'] = array(':' . pathinfo($smiley_file, PATHINFO_FILENAME) . ':', pathinfo($smiley_file, PATHINFO_FILENAME), 0, ++$smiley_order);
    }

    // Add the info for any new smileys to the database
    foreach ($new_smileys as $new_smiley)
    {
        $new_id_smiley = $smcFunc['db_insert']('',
            '{db_prefix}smileys',
            array(
                'code' => 'string-30', 'description' => 'string-80', 'smiley_row' => 'int', 'smiley_order' => 'int',
            ),
            $new_smiley['info'],
            array('id_smiley'),
            1
        );

        // We'll also need to add filename info to the smiley_files table
        foreach ($new_smiley['files'] as $set => $filename)
            $inserts[] = array($new_id_smiley, $set, $filename);
    }

    // Finally, update the smiley_files table with all our new files
    if (!empty($inserts))
    {
        $smcFunc['db_insert']('replace',
            '{db_prefix}smiley_files',
            array(
                'id_smiley' => 'int', 'smiley_set' => 'string-48', 'filename' => 'string-48',
            ),
            $inserts,
            array('id_smiley', 'smiley_set')
        );

        foreach ($known_sets as $set)
        {
            cache_put_data('parsing_smileys_' . $set, null, 480);
            cache_put_data('posting_smileys_' . $set, null, 480);
        }
    }
}

/**
 * Handles editing message icons
 */
function EditMessageIcons()
{
    global $context, $settings, $txt;
    global $smcFunc, $scripturl, $sourcedir;

    // Get a list of icons.
    $context['icons'] = array();
    $request = $smcFunc['db_query']('', '
        SELECT m.id_icon, m.title, m.filename, m.icon_order, m.id_board, b.name AS board_name
        FROM {db_prefix}message_icons AS m
            LEFT JOIN {db_prefix}boards AS b ON (b.id_board = m.id_board)
        WHERE ({query_see_board} OR b.id_board IS NULL)
        ORDER BY m.icon_order',
        array(
        )
    );
    $last_icon = 0;
    $trueOrder = 0;
    while ($row = $smcFunc['db_fetch_assoc']($request))
    {
        $context['icons'][$row['id_icon']] = array(
            'id' => $row['id_icon'],
            'title' => $row['title'],
            'filename' => $row['filename'],
            'image_url' => $settings[file_exists($settings['theme_dir'] . '/images/post/' . $row['filename'] . '.png') ? 'actual_images_url' : 'default_images_url'] . '/post/' . $row['filename'] . '.png',
            'board_id' => $row['id_board'],
            'board' => empty($row['board_name']) ? $txt['icons_edit_icons_all_boards'] : $row['board_name'],
            'order' => $row['icon_order'],
            'true_order' => $trueOrder++,
            'after' => $last_icon,
        );
        $last_icon = $row['id_icon'];
    }
    $smcFunc['db_free_result']($request);

    // Submitting a form?
    if (isset($_POST['icons_save']) || isset($_POST['delete']))
    {
        checkSession();

        // Deleting icons?
        if (isset($_POST['delete']) && !empty($_POST['checked_icons']))
        {
            $deleteIcons = array();
            foreach ($_POST['checked_icons'] as $icon)
                $deleteIcons[] = (int) $icon;

            // Do the actual delete!
            $smcFunc['db_query']('', '
                DELETE FROM {db_prefix}message_icons
                WHERE id_icon IN ({array_int:icon_list})',
                array(
                    'icon_list' => $deleteIcons,
                )
            );
        }
        // Editing/Adding an icon?
        elseif ($context['sub_action'] == 'editicon' && isset($_GET['icon']))
        {
            $_GET['icon'] = (int) $_GET['icon'];

            // Do some preperation with the data... like check the icon exists *somewhere*
            if (strpos($_POST['icon_filename'], '.png') !== false)
                $_POST['icon_filename'] = substr($_POST['icon_filename'], 0, -4);
            if (!file_exists($settings['default_theme_dir'] . '/images/post/' . $_POST['icon_filename'] . '.png'))
                fatal_lang_error('icon_not_found');
            // There is a 16 character limit on message icons...
            elseif (strlen($_POST['icon_filename']) > 16)
                fatal_lang_error('icon_name_too_long');
            elseif ($_POST['icon_location'] == $_GET['icon'] && !empty($_GET['icon']))
                fatal_lang_error('icon_after_itself');

            // First do the sorting... if this is an edit reduce the order of everything after it by one ;)
            if ($_GET['icon'] != 0)
            {
                $oldOrder = $context['icons'][$_GET['icon']]['true_order'];
                foreach ($context['icons'] as $id => $data)
                    if ($data['true_order'] > $oldOrder)
                        $context['icons'][$id]['true_order']--;
            }

            // If there are no existing icons and this is a new one, set the id to 1 (mainly for non-mysql)
            if (empty($_GET['icon']) && empty($context['icons']))
                $_GET['icon'] = 1;

            // Get the new order.
            $newOrder = $_POST['icon_location'] == 0 ? 0 : $context['icons'][$_POST['icon_location']]['true_order'] + 1;
            // Do the same, but with the one that used to be after this icon, done to avoid conflict.
            foreach ($context['icons'] as $id => $data)
                if ($data['true_order'] >= $newOrder)
                    $context['icons'][$id]['true_order']++;

            // Finally set the current icon's position!
            $context['icons'][$_GET['icon']]['true_order'] = $newOrder;

            // Simply replace the existing data for the other bits.
            $context['icons'][$_GET['icon']]['title'] = $_POST['icon_description'];
            $context['icons'][$_GET['icon']]['filename'] = $_POST['icon_filename'];
            $context['icons'][$_GET['icon']]['board_id'] = (int) $_POST['icon_board'];

            // Do a huge replace ;)
            $iconInsert = array();
            $iconInsert_new = array();
            foreach ($context['icons'] as $id => $icon)
            {
                if ($id != 0)
                {
                    $iconInsert[] = array($id, $icon['board_id'], $icon['title'], $icon['filename'], $icon['true_order']);
                }
                else
                {
                    $iconInsert_new[] = array($icon['board_id'], $icon['title'], $icon['filename'], $icon['true_order']);
                }
            }

            $smcFunc['db_insert']('replace',
                '{db_prefix}message_icons',
                array('id_icon' => 'int', 'id_board' => 'int', 'title' => 'string-80', 'filename' => 'string-80', 'icon_order' => 'int'),
                $iconInsert,
                array('id_icon')
            );

            if (!empty($iconInsert_new))
            {
                $smcFunc['db_insert']('insert',
                    '{db_prefix}message_icons',
                    array('id_board' => 'int', 'title' => 'string-80', 'filename' => 'string-80', 'icon_order' => 'int'),
                    $iconInsert_new,
                    array('id_icon')
                );
            }
        }

        // Unless we're adding a new thing, we'll escape
        if (!isset($_POST['add']))
            redirectexit('action=admin;area=smileys;sa=editicons');
    }

    $context[$context['admin_menu_name']]['current_subsection'] = 'editicons';

    $listOptions = array(
        'id' => 'message_icon_list',
        'title' => $txt['icons_edit_message_icons'],
        'base_href' => $scripturl . '?action=admin;area=smileys;sa=editicons',
        'get_items' => array(
            'function' => 'list_getMessageIcons',
        ),
        'no_items_label' => $txt['icons_no_entries'],
        'columns' => array(
            'icon' => array(
                'data' => array(
                    'function' => function($rowData) use ($settings, $smcFunc)
                    {
                        $images_url = $settings[file_exists(sprintf('%1$s/images/post/%2$s.png', $settings['theme_dir'], $rowData['filename'])) ? 'actual_images_url' : 'default_images_url'];
                        return sprintf('<img src="%1$s/post/%2$s.png" alt="%3$s">', $images_url, $rowData['filename'], $smcFunc['htmlspecialchars']($rowData['title']));
                    },
                    'class' => 'centercol',
                ),
            ),
            'filename' => array(
                'header' => array(
                    'value' => $txt['smileys_filename'],
                ),
                'data' => array(
                    'sprintf' => array(
                        'format' => '%1$s.png',
                        'params' => array(
                            'filename' => true,
                        ),
                    ),
                ),
            ),
            'description' => array(
                'header' => array(
                    'value' => $txt['smileys_description'],
                ),
                'data' => array(
                    'db_htmlsafe' => 'title',
                ),
            ),
            'board' => array(
                'header' => array(
                    'value' => $txt['icons_board'],
                ),
                'data' => array(
                    'function' => function($rowData) use ($txt)
                    {
                        return empty($rowData['board_name']) ? $txt['icons_edit_icons_all_boards'] : $rowData['board_name'];
                    },
                ),
            ),
            'modify' => array(
                'header' => array(
                    'value' => $txt['smileys_modify'],
                    'class' => 'centercol',
                ),
                'data' => array(
                    'sprintf' => array(
                        'format' => '<a href="' . $scripturl . '?action=admin;area=smileys;sa=editicon;icon=%1$s">' . $txt['smileys_modify'] . '</a>',
                        'params' => array(
                            'id_icon' => false,
                        ),
                    ),
                    'class' => 'centercol',
                ),
            ),
            'check' => array(
                'header' => array(
                    'value' => '<input type="checkbox" onclick="invertAll(this, this.form);">',
                    'class' => 'centercol',
                ),
                'data' => array(
                    'sprintf' => array(
                        'format' => '<input type="checkbox" name="checked_icons[]" value="%1$d">',
                        'params' => array(
                            'id_icon' => false,
                        ),
                    ),
                    'class' => 'centercol',
                ),
            ),
        ),
        'form' => array(
            'href' => $scripturl . '?action=admin;area=smileys;sa=editicons',
        ),
        'additional_rows' => array(
            array(
                'position' => 'below_table_data',
                'value' => '<input type="submit" name="delete" value="' . $txt['quickmod_delete_selected'] . '" class="button"> <a class="button" href="' . $scripturl . '?action=admin;area=smileys;sa=editicon">' . $txt['icons_add_new'] . '</a>',
            ),
        ),
    );

    require_once($sourcedir . '/Subs-List.php');
    createList($listOptions);

    // If we're adding/editing an icon we'll need a list of boards
    if ($context['sub_action'] == 'editicon' || isset($_POST['add']))
    {
        // Force the sub_template just in case.
        $context['sub_template'] = 'editicon';

        $context['new_icon'] = !isset($_GET['icon']);

        // Get the properties of the current icon from the icon list.
        if (!$context['new_icon'])
            $context['icon'] = $context['icons'][$_GET['icon']];

        // Get a list of boards needed for assigning this icon to a specific board.
        $boardListOptions = array(
            'use_permissions' => true,
            'selected_board' => isset($context['icon']['board_id']) ? $context['icon']['board_id'] : 0,
        );
        require_once($sourcedir . '/Subs-MessageIndex.php');
        $context['categories'] = getBoardList($boardListOptions);
    }
}

/**
 * Callback function for createList().
 *
 * @param int $start The item to start with (not used here)
 * @param int $items_per_page The number of items to display per page (not used here)
 * @param string $sort A string indicating how to sort the items (not used here)
 * @return array An array of information about message icons
 */
function list_getMessageIcons($start, $items_per_page, $sort)
{
    global $smcFunc;

    $request = $smcFunc['db_query']('', '
        SELECT m.id_icon, m.title, m.filename, m.icon_order, m.id_board, b.name AS board_name
        FROM {db_prefix}message_icons AS m
            LEFT JOIN {db_prefix}boards AS b ON (b.id_board = m.id_board)
        WHERE ({query_see_board} OR b.id_board IS NULL)
        ORDER BY m.icon_order',
        array()
    );

    $message_icons = array();
    while ($row = $smcFunc['db_fetch_assoc']($request))
        $message_icons[] = $row;
    $smcFunc['db_free_result']($request);

    return $message_icons;
}

?>