Extension manager: implemented more extension info and basic repository access

1 files changed, 112 insertions, 0 deletions

diff --git a/lib/plugins/extension/helper/repository.php b/lib/plugins/extension/helper/repository.php
new file mode 100644
index 000000000..37b9bc02c
--- /dev/null
+++ b/lib/plugins/extension/helper/repository.php
@@ -0,0 +1,112 @@
+<?php
+/**
+ * DokuWiki Plugin extension (Helper Component)
+ *
+ * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
+ * @author  Michael Hamann <michael@content-space.de>
+ */
+
+if (!defined('EXTENSION_REPOSITORY_API_ENDPOINT'))
+    define('EXTENSION_REPSITORY_API', 'http://www.dokuwiki.org/lib/plugins/pluginrepo/api.php');
+
+// must be run within Dokuwiki
+if(!defined('DOKU_INC')) die();
+
+/**
+ * Class helper_plugin_extension_repository provides access to the extension repository on dokuwiki.org
+ */
+class helper_plugin_extension_repository extends DokuWiki_Plugin {
+    private $loaded_extensions = array();
+    private $has_access = null;
+    /**
+     * Initialize the repository (cache), fetches data for all installed plugins
+     */
+    public function init() {
+        /* @var Doku_Plugin_Controller $plugin_controller */
+        global $plugin_controller;
+        if ($this->hasAccess()) {
+            $list = $plugin_controller->getList('', true);
+            $request_data = array('fmt' => 'php');
+            $request_needed = false;
+            foreach ($list as $name) {
+                $cache = new cache('##extension_manager##'.$name, 'repo');
+                $result = null;
+                if (!isset($this->loaded_extensions[$name]) && $this->hasAccess() && !$cache->useCache(array('age' => 3600 * 24))) {
+                    $this->loaded_extensions[$name] = true;
+                    $request_data['ext'][] = $name;
+                    $request_needed = true;
+                }
+            }
+
+            if ($request_needed) {
+                $httpclient = new DokuHTTPClient();
+                $data = $httpclient->post(EXTENSION_REPSITORY_API, $request_data);
+                if ($data !== false) {
+                    $extensions = unserialize($data);
+                    foreach ($extensions as $extension) {
+                        $cache = new cache('##extension_manager##'.$extension['plugin'], 'repo');
+                        $cache->storeCache(serialize($extension));
+                    }
+                } else {
+                    $this->has_access = false;
+                }
+            }
+        }
+    }
+
+    /**
+     * If repository access is available
+     *
+     * @return bool If repository access is available
+     */
+    public function hasAccess() {
+        if ($this->has_access === null) {
+            $cache = new cache('##extension_manager###hasAccess', 'repo');
+            $result = null;
+            if (!$cache->useCache(array('age' => 3600 * 24))) {
+                $httpclient = new DokuHTTPClient();
+                $httpclient->timeout = 5;
+                $data = $httpclient->get(EXTENSION_REPSITORY_API.'?cmd=ping');
+                if ($data !== false) {
+                    $this->has_access = true;
+                    $cache->storeCache(1);
+                } else {
+                    $this->has_access = false;
+                    $cache->storeCache(0);
+                }
+            } else {
+                $this->has_access = ($cache->retrieveCache(false) == 1);
+            }
+        }
+        return $this->has_access;
+    }
+
+    /**
+     * Get the remote data of an individual plugin or template
+     *
+     * @param string $name  The plugin name to get the data for, template names need to be prefix by 'template:'
+     * @return array The data or null if nothing was found (possibly no repository access)
+     */
+    public function getData($name) {
+        $cache = new cache('##extension_manager##'.$name, 'repo');
+        $result = null;
+        if (!isset($this->loaded_extensions[$name]) && $this->hasAccess() && !$cache->useCache(array('age' => 3600 * 24))) {
+            $this->loaded_extensions[$name] = true;
+            $httpclient = new DokuHTTPClient();
+            $data = $httpclient->get(EXTENSION_REPSITORY_API.'?fmt=php&ext[]='.urlencode($name));
+            if ($data !== false) {
+                $result = unserialize($data);
+                $cache->storeCache(serialize($result[0]));
+                return $result[0];
+            } else {
+                $this->has_access = false;
+            }
+        }
+        if (file_exists($cache->cache)) {
+            return unserialize($cache->retrieveCache(false));
+        }
+        return array();
+    }
+}
+
+// vim:ts=4:sw=4:et: