[Extension] SEO Optimizer (quadric_seo_optimizer)

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE extension SYSTEM "ext-1.0.dtd">

<!--
/**
 * Various SEO improvements
 *
 * quadric_seo_optimizer
 * @copyright (C) 2011 quadric quadmachine@wp.pl
 * @license [url]http://www.gnu.org/licenses/gpl.html[/url] GPL version 2 or higher
 *
 * Extension for PunBB (C) 2011 PunBB
 * License [url]http://www.gnu.org/licenses/gpl.html[/url] GPL version 2 or higher
 */
-->

<extension engine="1.0">
    <id>quadric_seo_optimizer</id>
    <title>Quadric SEO Optimizer</title>
    <version>1.1.2</version>
    <description>Various SEO improvements</description>
    <author>Quadric</author>

    <minversion>1.4</minversion>
    <maxtestedon>1.4.2</maxtestedon>

    <hooks>
        <!-- Check if url match the current scheme. If not redirect to current scheme -->
        <hook id="vf_modify_forum_info"><![CDATA[
        $current_url = forum_htmlencode(get_current_url());
        $seo_url = forum_sublink($forum_url['forum'], $forum_url['page'], (isset($_GET['p']) ? $_GET['p'] : 1), array($id, sef_friendly($cur_forum['forum_name'])));
        if ($seo_url !== $current_url) {
            header("Location: $seo_url", true, 301);
            exit();
        }
        ]]></hook>
        
        <!-- Check if url match the current scheme. If not redirect to current scheme -->
        <hook id="vt_modify_topic_info"><![CDATA[
        $current_url = forum_htmlencode(get_current_url());
        if ($pid) {
            $seo_url = forum_link($forum_url['post'], $pid);
            if ($seo_url !== $current_url . '#p' . $pid) {
                header("Location: $seo_url", true, 301);
                exit();
            }
        } else if ($id) {
            $seo_url = forum_sublink($forum_url['topic'], $forum_url['page'], (isset($_GET['p']) ? $_GET['p'] : 1), array($id, sef_friendly($cur_topic['forum_name'] . ' ' . $cur_topic['subject'])));
            if ($seo_url !== $current_url) {
                header("Location: $seo_url", true, 301);
                exit();
            }
        }
        ]]></hook>
        
        <!-- Add forum title parts into topic title in topic -->
        <hook id="vf_topic_loop_normal_topic_pre_item_title_merge"><![CDATA[
        $forum_page['item_title']['link'] = '<a href="'.forum_link($forum_url['topic'], array($cur_topic['id'], sef_friendly($cur_forum['forum_name'] . ' ' . $cur_topic['subject']))).'">'.forum_htmlencode($cur_topic['subject']).'</a>';
        ]]></hook>
        
        <!-- Add forum title parts into topic title in breadcrumb -->
        <hook id="vt_pre_header_load"><![CDATA[
        // Generate paging and posting links
        $forum_page['page_post']['paging'] = '<p class="paging"><span class="pages">'.$lang_common['Pages'].'</span> '.paginate($forum_page['num_pages'], $forum_page['page'], $forum_url['topic'], $lang_common['Paging separator'], array($id, sef_friendly($cur_topic['forum_name'] . ' ' . $cur_topic['subject']))).'</p>';
        
        // Setup breadcrumbs
        $forum_page['crumbs'] = array(
            array($forum_config['o_board_title'], forum_link($forum_url['index'])),
            array($cur_topic['forum_name'], forum_link($forum_url['forum'], array($cur_topic['forum_id'], sef_friendly($cur_topic['forum_name'])))),
            array($cur_topic['subject'], forum_link($forum_url['topic'], array($id, sef_friendly($cur_topic['forum_name'] . ' ' . $cur_topic['subject']))))
        );
        ]]></hook>
        
        <!-- Add forum title parts into thread response -->
        <hook id="po_pre_header_load"><![CDATA[
        if ($tid)
            $forum_page['crumbs'][count($forum_page['crumbs']) - 2] = array($cur_posting['subject'], forum_link($forum_url['topic'], array($tid, sef_friendly($cur_posting['forum_name'] . ' ' . $cur_posting['subject']))));
        ]]></hook>
        
        <!-- Add forum title parts into thread pages in forum -->
        <hook id="vf_topic_loop_normal_topic_pre_item_nav_merge"><![CDATA[
        if ($forum_page['item_pages'] > 1)
            $forum_page['item_nav']['pages'] = '<span>'.$lang_forum['Pages'].'&#160;</span>'.paginate($forum_page['item_pages'], -1, $forum_url['topic'], $lang_common['Page separator'], array($cur_topic['id'], sef_friendly($cur_forum['forum_name'] . ' ' . $cur_topic['subject'])));

        // Does this topic contain posts we haven't read? If so, tag it accordingly.
        if (!$forum_user['is_guest'] && $cur_topic['last_post'] > $forum_user['last_visit'] && (!isset($tracked_topics['topics'][$cur_topic['id']]) || $tracked_topics['topics'][$cur_topic['id']] < $cur_topic['last_post']) && (!isset($tracked_topics['forums'][$id]) || $tracked_topics['forums'][$id] < $cur_topic['last_post']))
        {
            $forum_page['item_nav']['new'] = '<em class="item-newposts"><a href="'.forum_link($forum_url['topic_new_posts'], array($cur_topic['id'], sef_friendly($cur_forum['forum_name'] . ' ' . $cur_topic['subject']))).'">'.$lang_forum['New posts'].'</a></em>';
            $forum_page['item_status']['new'] = 'new';
        }
        ]]></hook>
        
        <hook id="fn_generate_crumbs_end"><![CDATA[
        if ($reverse)
        {
            $crumbs = '';
            for ($i = ($num_crumbs - 1); $i >= 0; --$i)
                $crumbs .= (is_array($forum_page['crumbs'][$i]) ? forum_htmlencode($forum_page['crumbs'][$i][0]) : forum_htmlencode($forum_page['crumbs'][$i])).((isset($forum_page['page']) && $i == ($num_crumbs - 1) && $forum_page['page'] > 1) ? ' ('.$lang_common['Page'].' '.forum_number_format($forum_page['page']).')' : '').($i > 0 ? $lang_common['Title separator'] : '');
        }
        ]]></hook>
        
    </hooks>
</extension>

# BEGIN PunBB

# ----------------------------------------------------------------------
# Start rewrite engine
# ----------------------------------------------------------------------

<IfModule mod_rewrite.c>
# MultiViews interfers with proper rewriting
Options -MultiViews

RewriteEngine On

# Uncomment and properly set the RewriteBase if the rewrite rules are not working properly
#RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . rewrite.php [L]
</IfModule>


# ----------------------------------------------------------------------
# Better website experience for IE users
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# Force the latest IE version, in various cases when it may fall back to IE7 mode
# github.com/rails/rails/commit/123eb25#commitcomment-118920
# Use ChromeFrame if it's installed for a better experience for the poor IE folk

<IfModule mod_setenvif.c>
  <IfModule mod_headers.c>
     BrowserMatch MSIE ie
     Header set X-UA-Compatible "IE=Edge,chrome=1" env=ie
   </IfModule>
</IfModule>

<IfModule mod_headers.c>
# Because X-UA-Compatible isn't sent to non-IE (to save header bytes),
# We need to inform proxies that content changes based on UA
   Header append Vary User-Agent
# Cache control is set only if mod_headers is enabled, so that's unncessary to declare
</IfModule>


# ----------------------------------------------------------------------
# UTF-8 encoding
# ----------------------------------------------------------------------

# Use UTF-8 encoding for anything served text/plain or text/html
AddDefaultCharset utf-8

# Force UTF-8 for a number of file formats
AddCharset utf-8 .html .css .js .xml .json .rss


# ----------------------------------------------------------------------
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# Probably not.
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# ServerTokens Prod


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# Usually you should leave this activated, because you shouldn't allow everybody to surf through
# every folder on your server (which includes rather private places like CMS system folders).
<IfModule mod_autoindex.c>
    Options -Indexes
</IfModule>

# END PunBB

# Uncomment and properly set the RewriteBase if the rewrite rules are not working properly
#RewriteBase /

# Uncomment and properly set the RewriteBase if the rewrite rules are not working properly
RewriteBase /