Add basic system of update

- Check on update.freshrss.org for new updates
- Download script
- Apply script
- Need translations and verifications

NOTE: current script on server indicates version 0.7.3 is an update
of 0.8-dev ==> IT'S ONLY FOR MY TESTS!

Script just does a backup of ./data actually...

See https://github.com/marienfressinaud/FreshRSS/issues/411

8 files changed, 171 insertions, 19 deletions

diff --git a/app/Controllers/updateController.php b/app/Controllers/updateController.php
new file mode 100644
index 000000000..a15cb9fd5
--- /dev/null
+++ b/app/Controllers/updateController.php
@@ -0,0 +1,106 @@
+<?php
+
+class FreshRSS_update_Controller extends Minz_ActionController {
+	public function firstAction() {
+		$current_user = Minz_Session::param('currentUser', '');
+		if (!$this->view->loginOk && Minz_Configuration::isAdmin($current_user)) {
+			Minz_Error::error(
+				403,
+				array('error' => array(_t('access_denied')))
+			);
+		}
+
+		Minz_View::prependTitle(_t('update_system') . ' · ');
+	}
+
+	public function indexAction() {
+		if (file_exists(UPDATE_FILENAME)) {
+			// There is an update file to apply!
+			$this->view->message = array(
+				'status' => 'good',
+				'title' => _t('ok'),
+				'body' => _t('update_can_apply', _url('update', 'apply'))
+			);
+
+			return;
+		}
+	}
+
+	public function checkAction() {
+		$this->view->change_view('update', 'index');
+
+		if (file_exists(UPDATE_FILENAME)) {
+			// There is already an update file to apply: we don't need to check
+			// the webserver!
+			$this->view->message = array(
+				'status' => 'good',
+				'title' => _t('ok'),
+				'body' => _t('update_can_apply', _url('update', 'apply'))
+			);
+
+			return;
+		}
+
+		$c = curl_init(FRESHRSS_UPDATE_WEBSITE);
+		curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
+		$result = curl_exec($c);
+
+		if (curl_getinfo($c, CURLINFO_HTTP_CODE) == 200) {
+			$res_array = explode("\n", $result, 2);
+			$status = $res_array[0];
+
+			if (strpos($status, 'UPDATE') === 0) {
+				$script = $res_array[1];
+				if (file_put_contents(UPDATE_FILENAME, $script) !== false) {
+					$this->view->message = array(
+						'status' => 'good',
+						'title' => _t('ok'),
+						'body' => _t('update_can_apply', _url('update', 'apply'))
+					);
+				} else {
+					$this->view->message = array(
+						'status' => 'bad',
+						'title' => _t('damn'),
+						'body' => _t('update_problem')
+					);
+				}
+			} else {
+				$this->view->message = array(
+					'status' => 'bad',
+					'title' => _t('damn'),
+					'body' => _t('no_update')
+				);
+			}
+		} else {
+			$this->view->message = array(
+				'status' => 'bad',
+				'title' => _t('damn'),
+				'body' => _t('update_server_not_found', FRESHRSS_UPDATE_WEBSITE)
+			);
+		}
+		curl_close($c);
+	}
+
+	public function applyAction() {
+		require(UPDATE_FILENAME);
+		$res = apply_update();
+
+		if ($res === true) {
+			@unlink(UPDATE_FILENAME);
+
+			Minz_Session::_param('notification', array(
+				'type' => 'good',
+				'content' => Minz_Translate::t('update_finished')
+			));
+
+			Minz_Request::forward(array(), true);
+		} else {
+			Minz_Session::_param('notification', array(
+				'type' => 'bad',
+				'content' => Minz_Translate::t('update_failed', $res)
+			));
+
+			Minz_Request::forward(array('c' => 'update'), true);
+		}
+	}
+}
\ No newline at end of file
diff --git a/app/i18n/en.php b/app/i18n/en.php
index d80299b10..6110ccb11 100644
--- a/app/i18n/en.php
+++ b/app/i18n/en.php
@@ -408,4 +408,6 @@ return array (
 	'stats_entry_per_category'	=> 'Entries per category',
 	'stats_top_feed'		=> 'Top ten feeds',
 	'stats_entry_count'		=> 'Entry count',
+
+	'update_can_apply'		=> 'There is an available update. <a class="btn" href="%s">Apply</a>',
 );
diff --git a/app/i18n/fr.php b/app/i18n/fr.php
index 4be028ac3..5f88aa069 100644
--- a/app/i18n/fr.php
+++ b/app/i18n/fr.php
@@ -408,4 +408,6 @@ return array (
 	'stats_entry_per_category'	=> 'Articles par catégorie',
 	'stats_top_feed'		=> 'Les dix plus gros flux',
 	'stats_entry_count'		=> 'Nombre d’articles',
+
+	'update_can_apply'		=> 'Il y’a une mise à jour à appliquer. <a class="btn" href="%s">Appliquer</a>',
 );
diff --git a/app/layout/aside_configure.phtml b/app/layout/aside_configure.phtml
index e66f2f64c..03bea4836 100644
--- a/app/layout/aside_configure.phtml
+++ b/app/layout/aside_configure.phtml
@@ -1,25 +1,33 @@
 <ul class="nav nav-list aside">
-	<li class="nav-header"><?php echo Minz_Translate::t ('configuration'); ?></li>
-	<li class="item<?php echo Minz_Request::actionName () == 'display' ? ' active' : ''; ?>">
-		<a href="<?php echo _url ('configure', 'display'); ?>"><?php echo Minz_Translate::t ('display_configuration'); ?></a>
+	<li class="nav-header"><?php echo _t('configuration'); ?></li>
+	<li class="item<?php echo Minz_Request::actionName() == 'display' ? ' active' : ''; ?>">
+		<a href="<?php echo _url('configure', 'display'); ?>"><?php echo _t('display_configuration'); ?></a>
 	</li>
-	<li class="item<?php echo Minz_Request::actionName () == 'reading' ? ' active' : ''; ?>">
-		<a href="<?php echo _url ('configure', 'reading'); ?>"><?php echo Minz_Translate::t ('reading_configuration'); ?></a>
+	<li class="item<?php echo Minz_Request::actionName() == 'reading' ? ' active' : ''; ?>">
+		<a href="<?php echo _url('configure', 'reading'); ?>"><?php echo _t('reading_configuration'); ?></a>
 	</li>
-	<li class="item<?php echo Minz_Request::actionName () == 'archiving' ? ' active' : ''; ?>">
-		<a href="<?php echo _url ('configure', 'archiving'); ?>"><?php echo Minz_Translate::t ('archiving_configuration'); ?></a>
+	<li class="item<?php echo Minz_Request::actionName() == 'archiving' ? ' active' : ''; ?>">
+		<a href="<?php echo _url('configure', 'archiving'); ?>"><?php echo _t('archiving_configuration'); ?></a>
 	</li>
-	<li class="item<?php echo Minz_Request::actionName () == 'sharing' ? ' active' : ''; ?>">
-		<a href="<?php echo _url ('configure', 'sharing'); ?>"><?php echo Minz_Translate::t ('sharing'); ?></a>
+	<li class="item<?php echo Minz_Request::actionName() == 'sharing' ? ' active' : ''; ?>">
+		<a href="<?php echo _url('configure', 'sharing'); ?>"><?php echo _t('sharing'); ?></a>
 	</li>
-	<li class="item<?php echo Minz_Request::actionName () == 'shortcut' ? ' active' : ''; ?>">
-		<a href="<?php echo _url ('configure', 'shortcut'); ?>"><?php echo Minz_Translate::t ('shortcuts'); ?></a>
+	<li class="item<?php echo Minz_Request::actionName() == 'shortcut' ? ' active' : ''; ?>">
+		<a href="<?php echo _url('configure', 'shortcut'); ?>"><?php echo _t('shortcuts'); ?></a>
 	</li>
-	<li class="item<?php echo Minz_Request::actionName () == 'queries' ? ' active' : ''; ?>">
-		<a href="<?php echo _url ('configure', 'queries'); ?>"><?php echo Minz_Translate::t ('queries'); ?></a>
+	<li class="item<?php echo Minz_Request::actionName() == 'queries' ? ' active' : ''; ?>">
+		<a href="<?php echo _url('configure', 'queries'); ?>"><?php echo _t('queries'); ?></a>
 	</li>
 	<li class="separator"></li>
-	<li class="item<?php echo Minz_Request::actionName () == 'users' ? ' active' : ''; ?>">
-		<a href="<?php echo _url ('configure', 'users'); ?>"><?php echo Minz_Translate::t ('users'); ?></a>
+	<li class="item<?php echo Minz_Request::actionName() == 'users' ? ' active' : ''; ?>">
+		<a href="<?php echo _url('configure', 'users'); ?>"><?php echo _t('users'); ?></a>
 	</li>
+	<?php
+		$current_user = Minz_Session::param('currentUser', '');
+		if (Minz_Configuration::isAdmin($current_user)) {
+	?>
+	<li class="item<?php echo Minz_Request::controllerName() == 'update' ? ' active' : ''; ?>">
+		<a href="<?php echo _url('update', 'index'); ?>"><?php echo _t('update'); ?></a>
+	</li>
+	<?php } ?>
 </ul>
diff --git a/app/layout/header.phtml b/app/layout/header.phtml
index 2e42bfdea..028e63d8a 100644
--- a/app/layout/header.phtml
+++ b/app/layout/header.phtml
@@ -75,6 +75,12 @@ if (Minz_Configuration::canLogIn()) {
 				<li class="item"><a href="<?php echo _url('configure', 'queries'); ?>"><?php echo _t('queries'); ?></a></li>
 				<li class="separator"></li>
 				<li class="item"><a href="<?php echo _url('configure', 'users'); ?>"><?php echo _t('users'); ?></a></li>
+				<?php
+					$current_user = Minz_Session::param('currentUser', '');
+					if (Minz_Configuration::isAdmin($current_user)) {
+				?>
+				<li class="item"><a href="<?php echo _url('update', 'index'); ?>"><?php echo _t('update'); ?></a></li>
+				<?php } ?>
 				<li class="separator"></li>
 				<li class="item"><a href="<?php echo _url('stats', 'index'); ?>"><?php echo _t('stats'); ?></a></li>
 				<li class="item"><a href="<?php echo _url('index', 'logs'); ?>"><?php echo _t('logs'); ?></a></li>
diff --git a/app/views/update/index.phtml b/app/views/update/index.phtml
new file mode 100644
index 000000000..a1a872845
--- /dev/null
+++ b/app/views/update/index.phtml
@@ -0,0 +1,19 @@
+<?php $this->partial('aside_configure'); ?>
+
+<div class="post">
+	<h1><?php echo _t('update_system'); ?></h1>
+
+	<?php if (!empty($this->message)) { ?>
+	<p class="alert <?php echo $this->message['status'] === 'bad' ? 'alert-error' : 'alert-warn'; ?>">
+		<span class="alert-head"><?php echo $this->message['title']; ?></span>
+		<?php echo $this->message['body']; ?>
+	</p>
+	<?php } ?>
+
+	<?php if (empty($this->message) || $this->message['status'] !== 'good') { ?>
+	<p>
+		<a href="<?php echo _url('update', 'check'); ?>" class="btn"><?php echo _t('update_check'); ?></a>
+		<?php echo _i('help'); ?> <?php echo _t('update_last', $this->last_update_time); ?>
+	</p>
+	<?php } ?>
+</div>
diff --git a/constants.php b/constants.php
index e32b8cbc3..a968b82f4 100644
--- a/constants.php
+++ b/constants.php
@@ -1,6 +1,7 @@
 <?php
 define('FRESHRSS_VERSION', '0.8-dev');
 define('FRESHRSS_WEBSITE', 'http://freshrss.org');
+define('FRESHRSS_UPDATE_WEBSITE', 'http://update.freshrss.org?v=' . FRESHRSS_VERSION);
 
 // PHP text output compression http://php.net/ob_gzhandler (better to do it at Web server level)
 define('PHP_COMPRESSION', false);
@@ -13,6 +14,7 @@ define('FRESHRSS_PATH', dirname(__FILE__));
 		define('PUBLIC_RELATIVE', '..');
 
 	define('DATA_PATH', FRESHRSS_PATH . '/data');
+		define('UPDATE_FILENAME', DATA_PATH . '/update.php');
 		define('LOG_PATH', DATA_PATH . '/log');
 		define('CACHE_PATH', DATA_PATH . '/cache');
 
diff --git a/lib/Minz/View.php b/lib/Minz/View.php
index f034ab10b..a0dec1824 100644
--- a/lib/Minz/View.php
+++ b/lib/Minz/View.php
@@ -26,12 +26,19 @@ class Minz_View {
 	 * Détermine si on utilise un layout ou non
 	 */
 	public function __construct () {
+		$this->change_view(Minz_Request::controllerName(),
+		                   Minz_Request::actionName());
+		self::$title = Minz_Configuration::title ();
+	}
+
+	/**
+	 * Change le fichier de vue en fonction d'un controller / action
+	 */
+	public function change_view($controller_name, $action_name) {
 		$this->view_filename = APP_PATH
 		                     . self::VIEWS_PATH_NAME . '/'
-		                     . Minz_Request::controllerName () . '/'
-		                     . Minz_Request::actionName () . '.phtml';
-
-		self::$title = Minz_Configuration::title ();
+		                     . $controller_name . '/'
+		                     . $action_name . '.phtml';
 	}
 
 	/**