Manage plugins from the user interface and from the command line

3 files changed, 185 insertions, 7 deletions

diff --git a/app/Core/Plugin/Installer.php b/app/Core/Plugin/Installer.php
new file mode 100644
index 00000000..48c4d978
--- /dev/null
+++ b/app/Core/Plugin/Installer.php
@@ -0,0 +1,162 @@
+<?php
+
+namespace Kanboard\Core\Plugin;
+
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+use ZipArchive;
+
+/**
+ * Class Installer
+ *
+ * @package Kanboard\Core\Plugin
+ * @author  Frederic Guillot
+ */
+class Installer extends \Kanboard\Core\Base
+{
+    /**
+     * Return true if Kanboard is configured to install plugins
+     *
+     * @static
+     * @access public
+     * @return bool
+     */
+    public static function isConfigured()
+    {
+        return PLUGIN_INSTALLER && is_writable(PLUGINS_DIR) && extension_loaded('zip');
+    }
+
+    /**
+     * Install a plugin
+     *
+     * @access public
+     * @param  string $archiveUrl
+     * @throws PluginInstallerException
+     */
+    public function install($archiveUrl)
+    {
+        $zip = $this->downloadPluginArchive($archiveUrl);
+
+        if (! $zip->extractTo(PLUGINS_DIR)) {
+            $this->cleanupArchive($zip);
+            throw new PluginInstallerException(t('Unable to extract plugin archive.'));
+        }
+
+        $this->cleanupArchive($zip);
+    }
+
+    /**
+     * Uninstall a plugin
+     *
+     * @access public
+     * @param  string $pluginId
+     * @throws PluginInstallerException
+     */
+    public function uninstall($pluginId)
+    {
+        $pluginFolder = PLUGINS_DIR.DIRECTORY_SEPARATOR.basename($pluginId);
+
+        if (! file_exists($pluginFolder)) {
+            throw new PluginInstallerException(t('Plugin not found.'));
+        }
+
+        if (! is_writable($pluginFolder)) {
+            throw new PluginInstallerException(e('You don\'t have the permission to remove this plugin.'));
+        }
+
+        $this->removeAllDirectories($pluginFolder);
+    }
+
+    /**
+     * Update a plugin
+     *
+     * @access public
+     * @param  string $archiveUrl
+     * @throws PluginInstallerException
+     */
+    public function update($archiveUrl)
+    {
+        $zip = $this->downloadPluginArchive($archiveUrl);
+
+        $firstEntry = $zip->statIndex(0);
+        $this->uninstall($firstEntry['name']);
+
+        if (! $zip->extractTo(PLUGINS_DIR)) {
+            $this->cleanupArchive($zip);
+            throw new PluginInstallerException(t('Unable to extract plugin archive.'));
+        }
+
+        $this->cleanupArchive($zip);
+    }
+
+    /**
+     * Download archive from URL
+     *
+     * @access protected
+     * @param  string $archiveUrl
+     * @return ZipArchive
+     * @throws PluginInstallerException
+     */
+    protected function downloadPluginArchive($archiveUrl)
+    {
+        $zip = new ZipArchive();
+        $archiveData = $this->httpClient->get($archiveUrl);
+        $archiveFile = tempnam(sys_get_temp_dir(), 'kb_plugin');
+
+        if (empty($archiveData)) {
+            unlink($archiveFile);
+            throw new PluginInstallerException(t('Unable to download plugin archive.'));
+        }
+
+        if (file_put_contents($archiveFile, $archiveData) === false) {
+            unlink($archiveFile);
+            throw new PluginInstallerException(t('Unable to write temporary file for plugin.'));
+        }
+
+        if ($zip->open($archiveFile) !== true) {
+            unlink($archiveFile);
+            throw new PluginInstallerException(t('Unable to open plugin archive.'));
+        }
+
+        if ($zip->numFiles === 0) {
+            unlink($archiveFile);
+            throw new PluginInstallerException(t('There is no file in the plugin archive.'));
+        }
+
+        return $zip;
+    }
+
+    /**
+     * Remove archive file
+     *
+     * @access protected
+     * @param ZipArchive $zip
+     */
+    protected function cleanupArchive(ZipArchive $zip)
+    {
+        unlink($zip->filename);
+        $zip->close();
+    }
+
+    /**
+     * Remove recursively a directory
+     *
+     * @access protected
+     * @param  string $directory
+     */
+    protected function removeAllDirectories($directory)
+    {
+        $it = new RecursiveDirectoryIterator($directory, RecursiveDirectoryIterator::SKIP_DOTS);
+        $files = new RecursiveIteratorIterator($it, RecursiveIteratorIterator::CHILD_FIRST);
+
+        foreach ($files as $file) {
+            if ($file->isDir()) {
+                rmdir($file->getRealPath());
+            } else {
+                unlink($file->getRealPath());
+            }
+        }
+
+        rmdir($directory);
+    }
+}
diff --git a/app/Core/Plugin/Loader.php b/app/Core/Plugin/Loader.php
index 400517b7..f2f6add7 100644
--- a/app/Core/Plugin/Loader.php
+++ b/app/Core/Plugin/Loader.php
@@ -18,16 +18,16 @@ class Loader extends \Kanboard\Core\Base
     /**
      * Plugin instances
      *
-     * @access public
+     * @access protected
      * @var array
      */
-    public $plugins = array();
+    protected $plugins = array();
 
     /**
      * Get list of loaded plugins
      *
      * @access public
-     * @return array
+     * @return Base[]
      */
     public function getPlugins()
     {
@@ -52,7 +52,7 @@ class Loader extends \Kanboard\Core\Base
                 if ($fileInfo->isDir() && substr($fileInfo->getFilename(), 0, 1) !== '.') {
                     $pluginName = $fileInfo->getFilename();
                     $this->loadSchema($pluginName);
-                    $this->initializePlugin($this->loadPlugin($pluginName));
+                    $this->initializePlugin($pluginName, $this->loadPlugin($pluginName));
                 }
             }
         }
@@ -95,9 +95,10 @@ class Loader extends \Kanboard\Core\Base
      * Initialize plugin
      *
      * @access public
-     * @param  Base $plugin
+     * @param  string $pluginName
+     * @param  Base   $plugin
      */
-    public function initializePlugin(Base $plugin)
+    public function initializePlugin($pluginName, Base $plugin)
     {
         if (method_exists($plugin, 'onStartup')) {
             $this->dispatcher->addListener('app.bootstrap', array($plugin, 'onStartup'));
@@ -107,6 +108,6 @@ class Loader extends \Kanboard\Core\Base
         Tool::buildDICHelpers($this->container, $plugin->getHelpers());
 
         $plugin->initialize();
-        $this->plugins[] = $plugin;
+        $this->plugins[$pluginName] = $plugin;
     }
 }
diff --git a/app/Core/Plugin/PluginInstallerException.php b/app/Core/Plugin/PluginInstallerException.php
new file mode 100644
index 00000000..7d356c9b
--- /dev/null
+++ b/app/Core/Plugin/PluginInstallerException.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Kanboard\Core\Plugin;
+
+use Exception;
+
+/**
+ * Class PluginInstallerException
+ *
+ * @package Kanboard\Core\Plugin
+ * @author  Frederic Guillot
+ */
+class PluginInstallerException extends Exception
+{
+}