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URL Shortener From Yourls (1)

Arif — Tue, 04 May 2010 08:33:25 +0000

We can self-hosted URL Shortener service. I tried open source php-based URLShort and Yourls. I later choose Yourls.

Both of course based on .htaccess manipulation (mod_rewrite of Apache must be enabled). I install Yourls in side http://my.web/somedir. To make my short URL to use something like http://my.web/xGf12 instead of http://my.web/somedir/xGf12, I run the regular install with that somedir as based URL, but then create .htaccess in http://my.web/.htaccess (instead of http://my.web/somedir/.htaccess) However, I intend to use prefix x for the shorten URL. Here is how the regular expression implemented:

# BEGIN YOURLS
 
RewriteEngine On
RewriteBase /somedir/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(x[0-9A-Za-z]+)/?$ /somedir/yourls-go.php?id=$1 [L]
RewriteRule ^(x[0-9A-Za-z]+)\+/?$ /somedir/yourls-infos.php?id=$1 [L]
RewriteRule ^(x[0-9A-Za-z]+)\+all/?$ /somedir/yourls-infos.php?id=$1&amp;all=1 [L]
 
# END YOURLS

Embed Tag Cloud (In Other Than Sidebar)

Arif — Thu, 04 Mar 2010 03:24:24 +0000

I try to embed WordPress tag cloud to the header part of the theme. Tag print is called from wp_tag_cloud('smallest=8&largest=16'). One example would be by inserting that function in this part of header.php of the corresponding theme:

	
        	 if (is_home()) : ?>
        		 bloginfo('name'); ?>
				 bloginfo('description'); ?>
				 wp_tag_cloud('smallest=8&largest=16'); ?>
        	 else : ?>
		         echo get_settings('home'); ?>/"> bloginfo('name'); ?>
				 bloginfo('description'); ?>
	         endif; ?>

Another embedding option is to use the famous wp-cumulus plugin.


	//wp_tag_cloud('smallest=8&largest=16');
	ob_start();
	wp_tag_cloud('smallest=8&largest=16');
	$tagcloud = urlencode( str_replace( " ", " ", ob_get_clean() ) );
	//echo $tagcloud;
	//echo "'.urlencode('') . $tagcloud . urlencode('').'";
	/*$options = get_option('wpcumulus_options');*/
 
	$movie = plugins_url('wp-cumulus/tagcloud.swf');
	$path = plugins_url('wp-cumulus/');
 
	$options['width']='550';
	$options['height']='200';
	$options['bgcolor'] = '333333';
	$options['tcolor'] = '000000';
	$options['tcolor2'] = '000000';
	$options['hicolor'] = 'ffffff';
	$options['speed'] = '100';
	$options['distr'] = 'true';
	$options['mode'] = 'tags';
	$options['args'] = '';
	$options['compmode'] = 'true';
	$options['showwptags'] = 'true';
	$options['trans'] = 'true';
 
 
	$soname .= rand(0,9999999);
	$movie .= '?r=' . rand(0,9999999);
	$divname .= rand(0,9999999);
 
 
	// write flash tag
	if( $options['compmode']!='true' ){
		$flashtag = '';
		$flashtag .= '';
		$flashtag .= '.$divname.'">';
		if( $options['showwptags'] == 'true' ){ $flashtag .= ''; } else { $flashtag .= '
'; };
		// alternate content
		if( $options['mode'] != "cats" ){ $flashtag .= urldecode($tagcloud); }
		if( $options['mode'] != "tags" ){ $flashtag .= urldecode($cats); }
		$flashtag .= '
WP Cumulus Flash tag cloud by Roy Tanck and Luke Morton requires Flash Player 9 or better.
';
		$flashtag .= '';
 
	} else {
		$flashtag = '.$movie.'" width="'.$options['width'].'" height="'.$options['height'].'">';
		$flashtag .= '.$movie.'" />';
		$flashtag .= '.$options['bgcolor'].'" />';
		$flashtag .= '';
		if( $options['trans'] == 'true' ){
			$flashtag .= '';
		}
		$flashtag .= ';
		$flashtag .= 'tcolor=0x'.$options['tcolor'];
		$flashtag .= '&tcolor2=0x'.$options['tcolor2'];
		$flashtag .= '&hicolor=0x'.$options['hicolor'];
		$flashtag .= '&tspeed='.$options['speed'];
		$flashtag .= '&distr='.$options['distr'];
		$flashtag .= '&mode='.$options['mode'];
		// put tags in flashvar
		if( $options['mode'] != "cats" ){
			$flashtag .= '&tagcloud='.urlencode('') . $tagcloud . urlencode('');
		}
		// put categories in flashvar
		if( $options['mode'] != "tags" ){
			$flashtag .= '&categories=' . $cats;
		}
		$flashtag .= '" />';
		// alternate content
		if( $options['mode'] != "cats" ){ $flashtag .= ''.urldecode($tagcloud).'
'; }
		if( $options['mode'] != "tags" ){ $flashtag .= ''.urldecode($cats).'
'; }
		$flashtag .= 'WP-Cumulus by Roy Tanck and Luke Morton requires Flash Player 9 or better.
';
		$flashtag .= '';
 
	}
	print $flashtag;
?>

Write WordPress Plugins to Play Freemind Mind-Map File

Arif — Sat, 16 Jan 2010 15:14:15 +0000

The first version main goal is to embed the *.mm file which is a Freemind file. I found similarity of embedding this kind of file in flash-video-player plugins (I used version 3.1.8). So, I tried to reverse engineer by mind-mapping how it works first and how to hook plugins to WordPress. Here is version 1.1 of the fremind-wp-browser. The final mind-map and plugin in-use in this post looks crowded, but you can find highlighted pointers below the mind-map.

Embedding with SWFObject

The *.mm file is projected over visorFreemind.swf player with the help of javascript.

Using javascript from SWFObject, the idea of flash embedding is to create an SWFObject and then write() that inside certain part of page body, i.e. div.

<script type="text/javascript"> 
   var s0 = new SWFObject("visorFreemind.swf","n0","800","400","7");
   s0.write("video0") ;
script>

Parsing a Post

In general, the plugins will parse a post content to find [freemind file="path-to.mm" /] shortcode that will finally be replaced by the above javascript with respect to *.mm file that will be played over visorFreemind.swf.

Hooking the Plugins to WordPress

The above javascript needs to be loaded in every head part of each WordPress page, this action will call a function that will insert that script

163	add_action('wp_head', 'FreemindMap_head');

Hence, we get

on the header source of every page.

To deal with content parsing looking for the shortcode, add the following filter

166	add_filter('the_content', 'FreemindMap_Parse');

Activation/deactivation of the plugin is via the hook registration where it also create an option panel when activated by adding

99	add_options_page('Freemind Options', 'Freemind', '8', 'freemind-wp-browser.php', 'FreemindOptions');

This initial version has limited options though; enough to set the width and height of the mind-map projection.

MicroBlogger Add Search Feature (1)

Arif — Wed, 07 Oct 2009 05:27:33 +0000

This is mainly about view of custom search page (not about searching itself).

Adding “Search” To Main Link Tabs

Changes to file under

/app/omb/plugins/

wp.php
security.php

In wp.php:

Adding

$links['Search'] = $request->url_for('search');

between ‘Personal’ and ‘Profile’ would bring out the ‘Search’ tab in main link-tabs.

In security.php

Adding

function security_init() {
...
$request->connect( 'search' );
...

would give the URI link if tab is clicked or hovered, that is: http://base_url/?search.

Adding the search function would make the URI seek for the correlated viewing page

function search( $vars ) {
extract( $vars );
$_SESSION['requested_url'] = $request->base;
}

I create a viewing page then, under /app/omb/view/ by the name _search.html.

However, the main theme won’t appear correctly. So, what I do is: add a controller in /app/omb/controller/ with the name search_posts.php (an empty one for a start) and its view with the name _search_posts.html (inside /app/omb/view/). And then, add rendering to our previous search-function as in

function search( $vars ) {
extract( $vars );
$_SESSION['requested_url'] = $request->base;
render( 'action', 'search_posts' );
}

As I’ll be incorporating databases issue later. The following search is adequate to show relevant results, plain with no links etc. It is the content of the current _search_posts.html.

 if (environment('authentication') == 'password') : ?>
 


  
 $_SERVER['PHP_SELF']; ?>" method="post">
   url_for('search_posts'); ?>" method="post">
 
    
    
      Please enter search
    
    
      
    
    
      Search:
      
    
    
       
      
    
    
      
    
    
  
  


 
 
 
 
 endif; ?>
 
 if (isset($_POST['submit'])) : ?>
 
 

   $link1 = @mysql_connect("localhost","db_name","db_password")
                 or die("Could not connect to MySQL Server!");
 
   @mysql_select_db("omb_db")
                 or die("Could not select database!");
 
	$search_ = $_POST['search_'];
	$query = "SELECT `title` , `id` FROM `posts` WHERE `title` LIKE '%$search_%'";
	$result = mysql_query($query);
?>
 
   while (list($title, $id_) = mysql_fetch_row($result)	) : ?>
	

	

	

	 url_for(array('resource'=>'posts', 'id'=>$id_)); ?>"> print $title ?>;
	

	

	

   endwhile; ?>
  mysql_close(); ?>
 
 
 endif; ?>

Configuring Cacti

Arif — Wed, 02 Sep 2009 05:55:04 +0000

A successful installation in a LAMP system may require more library. I added php5-cli to enable php through command line i.e $ /usr/bin/php , libphp-adodb, php5-snmp.

In localhost snmpd is installed and configured /etc/default/snmpd:

SNMPDOPTS='-Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/snmpd.pid'

and edit /etc/snmp/snmpd.conf to have:

com2sec readonly  localhost         <some community string>

Install snmp, then I can test snmpwalk:

$ snmpwalk -Os -c <some community string> -v 1 localhost system

Cacti requires RRDTool and the correct version to be set in Settings menu of the Cacti web console. In my case, RRDTool version is 1.3x. In Cacti 0.8.6.x and above poller.php is called by cron instead of cmd.php, put this trough crontab in Cacti user (enter this Cacti user crontab from crontab -e -u or embed the user in crontab by root instead of individually edited).

*/2 * * * * /usr/bin/php /var/www/cacti/poller.php

It will generate file under rra directory of the web /var/www/cacti/rra/.rrd. RRD tool will create image based on this polling result file.