added plugin update stuff

trunk/includes/class.upgrademe.php

@@ -0,0 +1,198 @@
+<?php
+/*
+Plugin Name: upgrademe
+Description: Allows auto-upgrade for plugins outside of official WordPress repository
+Company: Copyright 2011 Meglio. All rights reserved
+Version: 0.2
+Author: Meglio (Anton Andriyevskyy)
+Plugin URI: https://github.com/meglio/wp-upgrademe
+*/
+
+if (!class_exists('Upgrademe')) {
+
+class Upgrademe
+{
+/**
+* Stores parsed and validated data returned by unofficial APIs.
+* @var array
+*/
+private static $data;
+
+private static $WP_FILTER_PREFIX = 'wpFilter_';
+
+public static function register()
+{
+$r = new ReflectionClass(__CLASS__);
+$methods = $r->getMethods(ReflectionMethod::IS_PUBLIC);
+foreach($methods as $m)
+{
+/** @var ReflectionMethod $m */
+if ($m->isStatic() && strpos($m->getName(), self::$WP_FILTER_PREFIX) === 0) {
+add_filter(substr($m->getName(), strlen(self::$WP_FILTER_PREFIX)), array(get_class(), $m->getName()),
+10, $m->getNumberOfParameters());
+}
+}
+}
+
+public static function wpFilter_http_response($response, $args, $url)
+{
+# Control recursion
+static $recursion = false;
+if ($recursion)
+return $response;
+
+if (empty($response) || !is_array($response) || !isset($response['body']))
+return $response;
+
+# Guess if it's time to take action
+if ($url == 'http://api.wordpress.org/plugins/update-check/1.0/')
+$showTime = true;
+# Prevent failures if WordPress changes url for updates; we will detect if it still contains "update-check" token
+# and called from withing wp_update_plugins() function
+elseif (stripos($url, 'update-check') !== false)
+{
+$showTime = false;
+$trace = debug_backtrace(false);
+foreach($trace as $t)
+# http request made from within wp_update_plugins
+if (isset($t['function']) && $t['function'] == 'wp_update_plugins')
+{
+$showTime = true;
+break;
+}
+unset($trace, $t);
+}
+else
+$showTime = false;
+if (!$showTime)
+return $response;
+
+# Loop over plugins who provided <pluginName>_upgrademe() function and use returned url to request for up-to-date version signature.
+# Collect retrieved (only valid) data into $upgrademe
+$plugins = get_plugins();
+$upgrademe = array();
+foreach($plugins as $file => $info)
+{
+# Get url if function exists
+$slugName = str_replace('-', '_', basename($file, '.php'));
+
+# Request latest version signature from custom url (non-WP plugins repository api) && validate response variables
+$recursion = true;
+$vars = self::loadPluginData($slugName);
+$recursion = false;
+if (empty($vars))
+continue;
+
+$upgrademe[$file] = $vars;
+}
+if (!count($upgrademe))
+return $response;
+
+$body = $response['body'];
+if (!empty($body))
+$body = unserialize($body);
+if (empty($body))
+$body = array();
+foreach($upgrademe as $file => $upgradeVars)
+{
+# Do not override data returned by official WP plugins repository API
+if (isset($body[$file]))
+continue;
+
+# If new version is different then current one, only then add info
+if (!isset($plugins[$file]['Version']) || $plugins[$file]['Version'] == $upgradeVars['new_version'])
+continue;
+
+$upgradeInfo = new stdClass();
+$upgradeInfo->id = $upgradeVars['id'];
+$upgradeInfo->slug = $upgradeVars['slug'];
+$upgradeInfo->new_version = $upgradeVars['new_version'];
+$upgradeInfo->url = $upgradeVars['url'];
+$upgradeInfo->package = $upgradeVars['package'];
+$body[$file] = $upgradeInfo;
+}
+$response['body'] = serialize($body);
+return $response;
+}
+
+public static function wpFilter_plugins_api($value, $action, $args)
+{
+// If for some reason value available already, do not change it
+if (!empty($value))
+return $value;
+
+if ($action != 'plugin_information' || !is_object($args) || !isset($args->slug) || empty($args->slug))
+return $value;
+
+$vars = self::loadPluginData($args->slug);
+if (empty($vars))
+return $value;
+
+return (object)$vars['info'];
+}
+
+public static function wpFilter_http_request_args($args, $url)
+{
+if (strpos($url, 'wp-upgrademe') === false || !is_array($args))
+return $args;
+
+$args['sslverify'] = false;
+return $args;
+}
+
+private static function loadPluginData($slug)
+{
+if (isset(self::$data[$slug]))
+return self::$data[$slug];
+
+$funcName = $slug.'_upgrademe';
+if (!function_exists($funcName))
+return self::$data[$slug] = null;
+
+$upgradeUrl = filter_var(call_user_func($funcName), FILTER_VALIDATE_URL);
+if (empty($upgradeUrl))
+return self::$data[$slug] = null;
+
+# Request latest version signature from custom url (non-WP plugins repository api) && validate response variables
+$r = wp_remote_post($upgradeUrl, array('method' => 'POST', 'timeout' => 4, 'redirection' => 5, 'httpversion' => '1.0', 'blocking' => true,
+'headers' => array(), 'body' => null, 'cookies' => array(), 'sslverify' => false));
+
+if( is_wp_error($r) || !isset($r['body']) || empty($r['body']))
+return self::$data[$slug] = null;
+
+$vars = json_decode($r['body'], true);
+if (empty($vars) || !is_array($vars) || count($vars) > 4
+|| !isset($vars['new_version']) || !isset($vars['url']) || !isset($vars['package']) || !isset($vars['info']))
+return self::$data[$slug] = null;
+
+# 2 147 483 648 - max int32
+# 16 777 215 - ffffff = max possible value of 6-letters hex
+# 50 000 000 - reasonable offset
+# Finally generate ID between 50 000 000 and 66 777 215
+$vars['id'] = 50000000 + hexdec(substr(md5($slug), 1, 6));
+
+$vars['slug'] = $slug;
+
+# Sanitize variables of "info"
+if (!is_array($vars['info']))
+$vars['info'] = array();
+
+$info = array();
+foreach($vars['info'] as $key => $val)
+{
+if (!in_array($key, array('name','slug','version','author','author_profile','contributors','requires','tested',
+'compatibility','rating','rating','num_ratings','downloaded','last_updated','added','homepage',
+'sections','download_link','tags')))
+continue;
+$info[$key] = $val;
+}
+$info['slug'] = $slug;
+$info['version'] = $vars['new_version'];
+$info['download_link'] = $vars['url'];
+$vars['info'] = $info;
+
+return self::$data[$slug] = $vars;
+}
+}
+Upgrademe::register();
+} # class_exists()

trunk/semmelstatzR_startup.php

@@ -70,4 +70,12 @@ if(!load_plugin_textdomain('semmelstatzR')) {
 
 include_once SEMMELSTATZR_SRVPATH.'/includes/functions.semr.php';
 include_once SEMMELSTATZR_SRVPATH.'/includes/functions.semr_template.php';
+include_once SEMMELSTATZR_SRVPATH.'/includes/class.upgrademe.php';
+if(class_exists("Upgrademe")) {
+    function semmelstatzR_upgrademe() {
+        // will be changed to sf.net soon as website is ready
+        //return 'http://semmelstatz.sourceforge.net/semr_update.php'; 
+        return 'http://www.php-backoffice.de/updates/semr_update.php';
+    }
+}
 ?>

trunk/test/semr_update.php

@@ -0,0 +1,26 @@
+{
+"new_version": "1.0.0 RC1",
+"url": "http://sourceforge.net/projects/semmelstatz",
+"package": "http://sourceforge.net/projects/semmelstatz/files",
+"info": {
+"name": "semmelstatzR",
+"author": "<a href='http://sourceforge.net/projects/semmelstatz'>SEM-Team</a>",
+"author_profile": "",
+"requires": "2.8",
+"tested": "3.2.1",
+"rating": 0,
+"num_ratings": 0,
+"downloaded": 0,
+"last_upated": "2011-07-15",
+"added": "2011-07-15",
+"homepage": "http://sourceforge.net/projects/semmelstatz",
+"tags": {"wordpress":"wordpress","upgrade":"upgrade","update":"update","wp":"wp","repository":"repsitory","plugins":"plugins","hacks":"hacks","trucks":"trucks"},
+"sections":{
+"description": "The best Statz-Tool!",
+"installation": "Take a look in the readme file.",
+"screenshots":"",
+"changelog":"",
+"faq":""
+}
+}
+}