Ticket #8476: wp_update_plugins_debug.php

<?php
/*
Plugin Name: wp_update_plugins() debug
Description: List available HTTP transports and the raw response from wp_update_plugins()
Version: 1.0
*/

function wp_update_plugins_hack() {
        global $wp_version;

        if ( defined('WP_INSTALLING') )
                return false;

        // If running blog-side, bail unless we've not checked in the last 12 hours
        if ( !function_exists( 'get_plugins' ) )
                require_once( ABSPATH . 'wp-admin/includes/plugin.php' );

        $plugins = get_plugins();
        $active  = get_option( 'active_plugins' );
        $current = get_option( 'update_plugins' );
        if ( ! is_object($current) )
                $current = new stdClass;

        $new_option = '';
        $new_option->last_checked = time();
        $time_not_changed = isset( $current->last_checked ) && 43200 > ( time() - $current->last_checked );

        $plugin_changed = false;
        foreach ( $plugins as $file => $p ) {
                $new_option->checked[ $file ] = $p['Version'];

                if ( !isset( $current->checked[ $file ] ) ) {
                        $plugin_changed = true;
                        continue;
                }

                if ( strval($current->checked[ $file ]) !== strval($p['Version']) )
                        $plugin_changed = true;
        }

        if ( isset ( $current->response ) && is_array( $current->response ) ) {
                foreach ( $current->response as $plugin_file => $update_details ) {
                        if ( ! isset($plugins[ $plugin_file ]) ) {
                                $plugin_changed = true;
                        }
                }
        }

        // Bail if we've checked in the last 12 hours and if nothing has changed
//      if ( $time_not_changed && !$plugin_changed )
//              return false;

        // Update last_checked for current to prevent multiple blocking requests if request hangs
        $current->last_checked = time();
        update_option( 'update_plugins', $current );

        $to_send->plugins = $plugins;
        $to_send->active = $active;
        $send = serialize( $to_send );
        $body = 'plugins=' . urlencode( $send );

        $options = array('method' => 'POST', 'timeout' => 3, 'body' => $body);
        $options['headers'] = array(
                'Content-Type' => 'application/x-www-form-urlencoded; charset=' . get_option('blog_charset'),
                'Content-Length' => strlen($body),
                'User-Agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo('url')
        );

        $raw_response = wp_remote_request('http://api.wordpress.org/plugins/update-check/1.0/', $options);

        if ( is_wp_error( $raw_response ) )
                return false;

//      if( 200 != $raw_response['response']['code'] ) {
//              return false;
//      }

        $response = unserialize( $raw_response['body'] );

        if ( false !== $response )
                $new_option->response = $response;
        else
                $new_option->response = array();

        update_option( 'update_plugins', $new_option );

echo "\n" . '$raw_response:' . "\n";
print_r($raw_response);
}

function list_transports() {
        $transport = '';
        if ( true === WP_Http_ExtHttp::test() )
                $transport .= 'ExtHttp';
        if ( true === WP_Http_Curl::test() )
                $transport .= ' Curl';
        if ( true === WP_Http_Streams::test() )
                $transport .= ' Streams';
        if ( true === WP_Http_Fopen::test() )
                $transport .= ' Fopen';
        if ( true === WP_Http_Fsockopen::test() )
                $transport .= ' Fsockopen';

        echo "Available transports: $transport";
}

add_action('admin_footer', 'list_transports');
add_action('admin_footer', 'wp_update_plugins_hack');

?>