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<extension engine="1.0">
    <id>url_spam</id>
    <title>Disallowing spammers urls</title>
    <version>0.5.2</version>
    <description>Disallows users to use urls that are used by spammers and delete users which try to use these urls if they have less then 5 posts.</description>
    <author>Grez &amp; KeyDog</author>
    <minversion>1.3.4</minversion>
    <maxtestedon>1.4.1</maxtestedon>
    <install>
        <![CDATA[
if (!$forum_db->table_exists('url_spam'))
{
    $schema = array(
        'FIELDS'    =>    array(
            'user_id'        =>    array(
                'datatype'        =>    'int(7)',
                'allow_null'    =>    false
            ),
            'ip'        =>    array(
                'datatype'        =>    'VARCHAR(15)',
                'allow_null'    =>    false,
                'default'        =>    '\'0.0.0.0\'',
            ),
            'url'        =>    array(
                'datatype'        =>    'VARCHAR(150)',
                'allow_null'    =>    true,
                'default'        =>    '\'\''
            ),
            'time'        =>    array(
                'datatype'        =>    'DATETIME',
                'allow_null'    =>    false
            ),
            'type'        =>    array(
                'datatype'        =>    'VARCHAR(4)',
                'allow_null'    =>    false
            ),
        ),
        'PRIMARY KEY'    =>    array('url', 'type')
    );
    $forum_db->create_table('url_spam', $schema);
}
        ]]>
    </install>
    
    <uninstall>
        <![CDATA[
$forum_db->drop_table('url_spam');
        ]]>
    </uninstall>
    <hooks>
    <hook id="po_end_validation"><![CDATA[
if(!isset($_POST['preview'])) {

    function urlcheck($url, &$errors, $text = "") {
        global $ext_info, $forum_user, $forum_db, $forum_url;
    
        $query = 'http://www.keydogbb.info/url_spam.php?url='.urlencode($url);
        $remote_file = get_remote_file($query, 3);
        if($remote_file['content'] == "Y") {
            if (file_exists($ext_info['path'].'/lang/'.$forum_user['language'].'/'.$ext_info['id'].'.php'))
                include $ext_info['path'].'/lang/'.$forum_user['language'].'/'.$ext_info['id'].'.php';
            else
                include $ext_info['path'].'/lang/English/'.$ext_info['id'].'.php';

            $query = array(
                'SELECT'    =>    'url',
                'FROM'        =>    'url_spam',
                'WHERE'        =>    'url = \''.$url.'\' AND type = \'post\''
            );
            $result = $forum_db->query_build($query) or error(__FILE__, __LINE__);
            if($forum_db->num_rows($result) == 0) {
                $query = array(
                   'INSERT'   => 'user_id, ip, url, time, type',
                   'INTO'     => 'url_spam',
                   'VALUES'   => '\''.$forum_user['id'].'\', \''.get_remote_address().'\', \''.$url.'\', NOW(), \'post\''
                );
                $forum_db->query_build($query) or error(__FILE__, __LINE__);
            }
            
            if($forum_user['num_posts'] < 5 && $forum_user['group_id'] != 2) {
                delete_user($forum_user['id'], true);
                message($lang_url_spam['User deleted']);
            } else {
                $errors[] = sprintf($lang_url_spam['URL disallowed'], $url, $url);
            }
        } else {
            $url = str_replace('"', '', $url);
        }

        if(!empty($text)) {
            return '[url='.$url.']'.$text.'[/url]';
        } else {
            return '[url]'.$url.'[/url]';
        }
    }

    $pattern = array();
    $pattern[] = '#\[url\]([^\[]*?)\[/url\]#e';
    $pattern[] = '#\[url=([^\[]+?)\](.*?)\[/url\]#e';

    $replace = array();
    $replace[] = 'urlcheck(\'$1\', $errors)';
    $replace[] = 'urlcheck(\'$1\', $errors, \'$2\')';

    $message = preg_replace($pattern, $replace, $message);

}
    ]]></hook>
    <hook id="pf_change_details_signature_validation"><![CDATA[
    $pattern = array();
    $pattern[] = '#\[url\]([^\[]*?)\[/url\]#e';
    $pattern[] = '#\[url=([^\[]+?)\](.*?)\[/url\]#e';

    $replace = array();
    $replace[] = 'urlcheck(\'$1\', $errors)';
    $replace[] = 'urlcheck(\'$1\', $errors, \'$2\')';

    if ($forum_config['o_make_links'] == '1')
    {
        if (!defined('FORUM_PARSER_LOADED')) {
            require FORUM_ROOT.'include/parser.php';
        }
        $_POST['signature'] = do_clickable($_POST['signature']);
    }
    
    $_POST['signature'] = preg_replace($pattern, $replace, $_POST['signature']);

    function urlcheck($url, &$errors, $text = "") {
        global $ext_info, $forum_user, $forum_db, $forum_url;

        $query = 'http://www.keydogbb.info/url_spam.php?url='.urlencode($url);
        $remote_file = get_remote_file($query, 3);
        if($remote_file['content'] == "Y") {
            if (file_exists($ext_info['path'].'/lang/'.$forum_user['language'].'/'.$ext_info['id'].'.php'))
                include $ext_info['path'].'/lang/'.$forum_user['language'].'/'.$ext_info['id'].'.php';
            else
                include $ext_info['path'].'/lang/English/'.$ext_info['id'].'.php';
        
            $query = array(
                'SELECT'    =>    'url',
                'FROM'        =>    'url_spam',
                'WHERE'        =>    'url = \''.$url.'\' AND type = \'sig\''
            );
            $result = $forum_db->query_build($query) or error(__FILE__, __LINE__);
            if($forum_db->num_rows($result) == 0) {
                $query = array(
                   'INSERT'   => 'user_id, ip, url, time, type',
                   'INTO'     => 'url_spam',
                   'VALUES'   => '\''.$forum_user['id'].'\', \''.get_remote_address().'\', \''.$url.'\', NOW(), \'sig\''
                );
                $forum_db->query_build($query) or error(__FILE__, __LINE__);
            }
            
            if($forum_user['num_posts'] < 5 && $forum_user['group_id'] != 2) {
                delete_user($forum_user['id'], true);
                message($lang_url_spam['User deleted']);
            } else {
                $errors[] = sprintf($lang_url_spam['URL disallowed'], $url, $url);
            }
        } else {
            $url = str_replace('"', '', $url);
        }

        if(!empty($text)) {
            return '[url='.$url.']'.$text.'[/url]';
        } else {
            return '[url]'.$url.'[/url]';
        }
    }
    ]]></hook>
    <hook id="ain_items_end"><![CDATA[
    ?>
    <div class="ct-set group-item<?php echo ++$forum_page['item_count'] ?>">
        <div class="ct-box">
            <h3 class="ct-legend hn"><span>URL spam checker</span></h3>
                <ul class="data-list">
     
    <?php
        $query = array(
            'SELECT'    => 'us.user_id, u.username, us.ip, us.url, DATE_FORMAT(us.time, \'%Y-%m-%d %H:%i:%s\') AS date, us.type',
            'FROM'        => 'url_spam AS us',
            'JOINS'        => array(
                array(
                    'LEFT JOIN'    => 'users AS u',
                    'ON'        => 'u.id = us.user_id',
                ),
            ),
            'ORDER BY'    => 'time DESC',
            'LIMIT'        => '50',
        );
        $result = $forum_db->query_build($query) or error(__FILE__, __LINE__);
        ?>
                            <li><table>
                            <tr><th style="width: 70px;">User</th><th style="width: 120px;">IP</th><th style="width: 200px;">URL</th><th style="width: 100px;">Date</th><th style="width: 50px;">Type</th></tr>
                            <?php
                            while($spam = $forum_db->fetch_assoc($result)) {
                                echo "<tr>";
                                    echo "<td><small>".((!empty($spam['username'])) ? "<a href=\"".forum_link($forum_url['user'], $spam['user_id'])."\">".forum_htmlencode($spam['username'])."</a>" : "DELETED")."</small></td>";
                                    echo "<td><small>".$spam['ip']."</small></td>";
                                    echo "<td><small>".$spam['url']."</small></td>";
                                    echo "<td><small>".$spam['date']."</small></td>";
                                    echo "<td><small>".$spam['type']."</small></td>";
                                echo "</tr>";
                            }
                            ?>
                            </table>
                            <center><small><i>Last 25 entries. Ordered by date.</i></small></center></li>
                        </ul>
                    </div>
                </div>
    <?php
    ]]></hooks>
</extension>