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class.plugin-sniffer.php
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class.plugin-sniffer.php
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<?php
/**
* WordPress Plugin Sniffer
*
* @author Benjamin J. Balter <ben@balter.com>
* @package
*/
class WP_Plugin_Sniffer {
public $api = 'http://api.wordpress.org/plugins/info/1.0/';
public $per_page = 50;
public $count = 100;
public $timeout = 30;
public $found = array();
public $plugins = array();
public $home = null;
public $dir = 'wp-content/plugins/';
public $ttl = 86400;
public $path_to_wp = '../3.3.1/';
public $num_found = 0;
/**
* Bookstrap WP
*/
function __construct( $home = null, $count = null ) {
//bootstrap
include $this->path_to_wp . 'wp-load.php';
include $this->path_to_wp . 'wp-admin/includes/plugin-install.php';
require_once( 'tlc-transients/tlc-transients.php' );
set_time_limit( 0 );
if ( $home != null )
$this->home = esc_url( $home );
if ( $count != null )
$this->count = (int) $count;
add_filter( 'http_request_timeout', array( &$this, 'timeout_filter' ) );
}
/**
* WP API server is slow to query lots of plugins, give it more time
*/
function timeout_filter() {
return $this->timeout;
}
/**
* Grab a specific page of results
* Note: > 100, things get a bit iffy on WP's side
* @param int $num the page number to retrieve
* @retun array an array of plugin slugs
*/
function fetch_page( $page = 1 ) {
$plugins = plugins_api( 'query_plugins', array(
'browse' => 'popular',
'per_page' => $this->per_page,
'fields' => array(),
'page' => $page,
)
);
if ( is_wp_error( $plugins ) )
wp_die( "Can't retrieve plugin list" );
return wp_list_pluck( $plugins->plugins, 'slug' );
}
/**
* Get the top N plugin slugs
* Note: we fetch full pages of 100 and
* then slice down the array as necessary
* to allow for cleaner caching
* @param int $num the number of plugins to retrieve
* @return array an array of the top $num plugin slugs
*/
function get_plugins( $num = null ) {
if ( $num == null )
$num = $this->count;
$num = (int) $num;
$page = 1;
$pages = (int) ( ceil( $num / $this->per_page ) );
$plugins = array();
for( $page = 1; $page <= $pages; $page++ ) {
$this_page = tlc_transient( 'plugin_sniffer_' . $this->per_page . 'x' . $page )
->updates_with( array( &$this, 'fetch_page' ), array( $page ) )
->expires_in( $this->ttl )
->get();
$plugins = array_merge( $plugins, $this_page );
}
$this->plugins = array_slice( $plugins, 0, $num );
return $this->plugins;
}
/**
* Check a given site
* @param string $home the home URL of the site
* @param int $num number of plugins to check
*/
function sniff( $home = null, $num = null ) {
if ( $home == null )
$home = $this->home;
$this->home = trailingslashit( esc_url( $home ) );
$this->found = array();
$plugins = $this->get_plugins( $num );
foreach ( $plugins as $plugin ) {
$response = wp_remote_head( trailingslashit( $this->home . $this->dir . $plugin ), array( 'timeout' => $this->timeout ) );
//either the directory exists, in which case we'd get either a 403 (denied) or 200 (a listing)
//or it doesn't exist, in which case the plugin doesn't exist
if ( wp_remote_retrieve_response_code( $response ) == 404 )
continue;
$this->found[] = $plugin;
}
$this->num_found = count( $this->found );
return $this->found;
}
}