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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\db\migration\data\v310;
class bot_update extends \phpbb\db\migration\migration
{
    static public function depends_on()
    {
        return array('\phpbb\db\migration\data\v310\rc6');
    }
    public function update_data()
    {
        return array(
            array('custom', array(array(&$this, 'update_bing_bot'))),
            array('custom', array(array(&$this, 'update_bots'))),
        );
    }
    public function update_bing_bot()
    {
        $bot_name = 'Bing [Bot]';
        $bot_name_clean = utf8_clean_string($bot_name);
        $sql = 'SELECT user_id
            FROM ' . USERS_TABLE . "
            WHERE username_clean = '" . $this->db->sql_escape($bot_name_clean) . "'";
        $result = $this->db->sql_query($sql);
        $bing_already_added = (bool) $this->db->sql_fetchfield('user_id');
        $this->db->sql_freeresult($result);
        if (!$bing_already_added)
        {
            $bot_agent = 'bingbot/';
            $bot_ip = '';
            $sql = 'SELECT group_id, group_colour
                FROM ' . GROUPS_TABLE . "
                WHERE group_name = 'BOTS'";
            $result = $this->db->sql_query($sql);
            $group_row = $this->db->sql_fetchrow($result);
            $this->db->sql_freeresult($result);
            if (!$group_row)
            {
                // default fallback, should never get here
                $group_row['group_id'] = 6;
                $group_row['group_colour'] = '9E8DA7';
            }
            if (!function_exists('user_add'))
            {
                include($this->phpbb_root_path . 'includes/functions_user.' . $this->php_ext);
            }
            $user_row = array(
                'user_type'                => USER_IGNORE,
                'group_id'                => $group_row['group_id'],
                'username'                => $bot_name,
                'user_regdate'            => time(),
                'user_password'            => '',
                'user_colour'            => $group_row['group_colour'],
                'user_email'            => '',
                'user_lang'                => $this->config['default_lang'],
                'user_style'            => $this->config['default_style'],
                'user_timezone'            => 0,
                'user_dateformat'        => $this->config['default_dateformat'],
                'user_allow_massemail'    => 0,
            );
            $user_id = user_add($user_row);
            $sql = 'INSERT INTO ' . BOTS_TABLE . ' ' . $this->db->sql_build_array('INSERT', array(
                    'bot_active'    => 1,
                    'bot_name'        => (string) $bot_name,
                    'user_id'        => (int) $user_id,
                    'bot_agent'        => (string) $bot_agent,
                    'bot_ip'        => (string) $bot_ip,
                ));
            $this->sql_query($sql);
        }
    }
    public function update_bots()
    {
        // Update bots
        if (!function_exists('user_delete'))
        {
            include($this->phpbb_root_path . 'includes/functions_user.' . $this->php_ext);
        }
        $bots_updates = array(
            // Bot Deletions
            'NG-Search [Bot]'        => false,
            'Nutch/CVS [Bot]'        => false,
            'OmniExplorer [Bot]'    => false,
            'Seekport [Bot]'        => false,
            'Synoo [Bot]'            => false,
            'WiseNut [Bot]'            => false,
            // Bot Updates
            // Bot name to bot user agent map
            'Baidu [Spider]'    => 'Baiduspider',
            'Exabot [Bot]'        => 'Exabot',
            'Voyager [Bot]'        => 'voyager/',
            'W3C [Validator]'    => 'W3C_Validator',
        );
        foreach ($bots_updates as $bot_name => $bot_agent)
        {
            $sql = 'SELECT user_id
                FROM ' . USERS_TABLE . '
                WHERE user_type = ' . USER_IGNORE . "
                    AND username_clean = '" . $this->db->sql_escape(utf8_clean_string($bot_name)) . "'";
            $result = $this->db->sql_query($sql);
            $bot_user_id = (int) $this->db->sql_fetchfield('user_id');
            $this->db->sql_freeresult($result);
            if ($bot_user_id)
            {
                if ($bot_agent === false)
                {
                    $sql = 'DELETE FROM ' . BOTS_TABLE . "
                        WHERE user_id = $bot_user_id";
                    $this->sql_query($sql);
                    user_delete('retain', $bot_user_id);
                }
                else
                {
                    $sql = 'UPDATE ' . BOTS_TABLE . "
                        SET bot_agent = '" .  $this->db->sql_escape($bot_agent) . "'
                        WHERE user_id = $bot_user_id";
                    $this->sql_query($sql);
                }
            }
        }
    }
}