Better handling of plugin incompatibility

If a PHP is raised while executing plugin hook, Shaarli will display an error instead of rendering the error page (or just ending in fatal error for default hooks).
Also added phpErrorHandler which is handled differently that regular errorHandler by Slim.:

8 files changed, 90 insertions, 50 deletions

diff --git a/application/container/ContainerBuilder.php b/application/container/ContainerBuilder.php
index 4a1a6ea7..58067c99 100644
--- a/application/container/ContainerBuilder.php
+++ b/application/container/ContainerBuilder.php
@@ -152,6 +152,9 @@ class ContainerBuilder
         $container['errorHandler'] = function (ShaarliContainer $container): ErrorController {
             return new ErrorController($container);
         };
+        $container['phpErrorHandler'] = function (ShaarliContainer $container): ErrorController {
+            return new ErrorController($container);
+        };
 
         return $container;
     }
diff --git a/application/container/ShaarliContainer.php b/application/container/ShaarliContainer.php
index c4fe753e..9a9a974a 100644
--- a/application/container/ShaarliContainer.php
+++ b/application/container/ShaarliContainer.php
@@ -4,7 +4,6 @@ declare(strict_types=1);
 
 namespace Shaarli\Container;
 
-use http\Cookie;
 use Shaarli\Bookmark\BookmarkServiceInterface;
 use Shaarli\Config\ConfigManager;
 use Shaarli\Feed\FeedBuilder;
@@ -30,7 +29,7 @@ use Slim\Container;
  * @property CookieManager            $cookieManager
  * @property ConfigManager            $conf
  * @property mixed[]                  $environment          $_SERVER automatically injected by Slim
- * @property callable                 $errorHandler         Overrides default Slim error display
+ * @property callable                 $errorHandler         Overrides default Slim exception display
  * @property FeedBuilder              $feedBuilder
  * @property FormatterFactory         $formatterFactory
  * @property History                  $history
@@ -39,6 +38,7 @@ use Slim\Container;
  * @property NetscapeBookmarkUtils    $netscapeBookmarkUtils
  * @property PageBuilder              $pageBuilder
  * @property PageCacheManager         $pageCacheManager
+ * @property callable                 $phpErrorHandler      Overrides default Slim PHP error display
  * @property PluginManager            $pluginManager
  * @property SessionManager           $sessionManager
  * @property Thumbnailer              $thumbnailer
diff --git a/application/front/controller/visitor/ShaarliVisitorController.php b/application/front/controller/visitor/ShaarliVisitorController.php
index 47057d97..f17c8ed3 100644
--- a/application/front/controller/visitor/ShaarliVisitorController.php
+++ b/application/front/controller/visitor/ShaarliVisitorController.php
@@ -58,10 +58,11 @@ abstract class ShaarliVisitorController
     {
         $this->assignView('linkcount', $this->container->bookmarkService->count(BookmarkFilter::$ALL));
         $this->assignView('privateLinkcount', $this->container->bookmarkService->count(BookmarkFilter::$PRIVATE));
-        $this->assignView('plugin_errors', $this->container->pluginManager->getErrors());
 
         $this->executeDefaultHooks($template);
 
+        $this->assignView('plugin_errors', $this->container->pluginManager->getErrors());
+
         return $this->container->pageBuilder->render($template, $this->container->basePath);
     }
 
diff --git a/application/plugin/PluginManager.php b/application/plugin/PluginManager.php
index b3e8b2f8..2d93cb3a 100644
--- a/application/plugin/PluginManager.php
+++ b/application/plugin/PluginManager.php
@@ -116,7 +116,12 @@ class PluginManager
             $hookFunction = $this->buildHookName($hook, $plugin);
 
             if (function_exists($hookFunction)) {
-                $data = call_user_func($hookFunction, $data, $this->conf);
+                try {
+                    $data = call_user_func($hookFunction, $data, $this->conf);
+                } catch (\Throwable $e) {
+                    $error = $plugin . t(' [plugin incompatibility]: ') . $e->getMessage();
+                    $this->errors = array_unique(array_merge($this->errors, [$error]));
+                }
             }
         }
     }
diff --git a/inc/languages/fr/LC_MESSAGES/shaarli.po b/inc/languages/fr/LC_MESSAGES/shaarli.po
index fda0e62f..fbb2fe64 100644
--- a/inc/languages/fr/LC_MESSAGES/shaarli.po
+++ b/inc/languages/fr/LC_MESSAGES/shaarli.po
@@ -1,15 +1,15 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: Shaarli\n"
-"POT-Creation-Date: 2020-07-23 17:11+0200\n"
-"PO-Revision-Date: 2020-07-23 17:12+0200\n"
+"POT-Creation-Date: 2020-08-27 12:01+0200\n"
+"PO-Revision-Date: 2020-08-27 12:02+0200\n"
 "Last-Translator: \n"
 "Language-Team: Shaarli\n"
 "Language: fr_FR\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"X-Generator: Poedit 2.0.6\n"
+"X-Generator: Poedit 2.3\n"
 "X-Poedit-Basepath: ../../../..\n"
 "Plural-Forms: nplurals=2; plural=(n > 1);\n"
 "X-Poedit-SourceCharset: UTF-8\n"
@@ -103,36 +103,36 @@ msgstr "Mo"
 msgid "GiB"
 msgstr "Go"
 
-#: application/bookmark/BookmarkFileService.php:161
-#: application/bookmark/BookmarkFileService.php:186
-#: application/bookmark/BookmarkFileService.php:211
-#: application/bookmark/BookmarkFileService.php:228
+#: application/bookmark/BookmarkFileService.php:165
+#: application/bookmark/BookmarkFileService.php:190
+#: application/bookmark/BookmarkFileService.php:215
+#: application/bookmark/BookmarkFileService.php:232
 msgid "You're not authorized to alter the datastore"
 msgstr "Vous n'êtes pas autorisé à modifier les données"
 
-#: application/bookmark/BookmarkFileService.php:164
-#: application/bookmark/BookmarkFileService.php:189
-#: application/bookmark/BookmarkFileService.php:231
+#: application/bookmark/BookmarkFileService.php:168
+#: application/bookmark/BookmarkFileService.php:193
+#: application/bookmark/BookmarkFileService.php:235
 msgid "Provided data is invalid"
 msgstr "Les informations fournies ne sont pas valides"
 
-#: application/bookmark/BookmarkFileService.php:192
+#: application/bookmark/BookmarkFileService.php:196
 msgid "This bookmarks already exists"
 msgstr "Ce marque-page existe déjà."
 
-#: application/bookmark/BookmarkInitializer.php:40
+#: application/bookmark/BookmarkInitializer.php:37
 #: application/legacy/LegacyLinkDB.php:266
 msgid "My secret stuff... - Pastebin.com"
 msgstr "Mes trucs secrets... - Pastebin.com"
 
-#: application/bookmark/BookmarkInitializer.php:42
+#: application/bookmark/BookmarkInitializer.php:39
 #: application/legacy/LegacyLinkDB.php:268
 msgid "Shhhh! I'm a private link only YOU can see. You can delete me too."
 msgstr ""
 "Pssst ! Je suis un lien privé que VOUS êtes le seul à voir. Vous pouvez me "
 "supprimer aussi."
 
-#: application/bookmark/BookmarkInitializer.php:48
+#: application/bookmark/BookmarkInitializer.php:45
 #: application/legacy/LegacyLinkDB.php:246
 #: tmp/page.footer.b91ef64efc3688266305ea9b42e5017e.rtpl.php:15
 #: tmp/page.footer.b91ef64efc3688266305ea9b42e5017e.rtpl.php:49
@@ -144,7 +144,7 @@ msgstr ""
 "Le gestionnaire de marque-pages personnel, minimaliste, et sans base de "
 "données"
 
-#: application/bookmark/BookmarkInitializer.php:51
+#: application/bookmark/BookmarkInitializer.php:48
 #: application/legacy/LegacyLinkDB.php:249
 msgid ""
 "Welcome to Shaarli! This is your first public bookmark. To edit or delete "
@@ -210,10 +210,6 @@ msgstr "Liens directs"
 msgid "Permalink"
 msgstr "Permalien"
 
-#: application/front/ShaarliMiddleware.php:78
-msgid "An unexpected error occurred."
-msgstr "Une erreur inattendue s'est produite."
-
 #: application/front/controller/admin/ConfigureController.php:54
 #: tmp/configure.b91ef64efc3688266305ea9b42e5017e.rtpl.php:24
 msgid "Configure"
@@ -230,7 +226,7 @@ msgid "Please synchronize them."
 msgstr "Merci de les synchroniser."
 
 #: application/front/controller/admin/ConfigureController.php:113
-#: application/front/controller/visitor/InstallController.php:137
+#: application/front/controller/visitor/InstallController.php:136
 msgid "Error while writing config file after configuration update."
 msgstr ""
 "Une erreur s'est produite lors de la sauvegarde du fichier de configuration."
@@ -373,7 +369,7 @@ msgstr "Mise à jour des miniatures"
 msgid "Tools"
 msgstr "Outils"
 
-#: application/front/controller/visitor/BookmarkListController.php:114
+#: application/front/controller/visitor/BookmarkListController.php:115
 msgid "Search: "
 msgstr "Recherche : "
 
@@ -385,13 +381,17 @@ msgstr "Aujourd'hui"
 msgid "Yesterday"
 msgstr "Hier"
 
-#: application/front/controller/visitor/DailyController.php:86
+#: application/front/controller/visitor/DailyController.php:85
 #: tmp/page.header.b91ef64efc3688266305ea9b42e5017e.rtpl.php:48
 #: tmp/page.header.cedf684561d925457130839629000a81.rtpl.php:48
 msgid "Daily"
 msgstr "Quotidien"
 
-#: application/front/controller/visitor/InstallController.php:74
+#: application/front/controller/visitor/ErrorController.php:36
+msgid "An unexpected error occurred."
+msgstr "Une erreur inattendue s'est produite."
+
+#: application/front/controller/visitor/InstallController.php:73
 #, php-format
 msgid ""
 "<pre>Sessions do not seem to work correctly on your server.<br>Make sure the "
@@ -410,14 +410,14 @@ msgstr ""
 "des cookies. Nous vous recommandons d'accéder à votre serveur depuis son "
 "adresse IP ou un <em>Fully Qualified Domain Name</em>.<br>"
 
-#: application/front/controller/visitor/InstallController.php:149
+#: application/front/controller/visitor/InstallController.php:144
 msgid ""
 "Shaarli is now configured. Please login and start shaaring your bookmarks!"
 msgstr ""
 "Shaarli est maintenant configuré. Vous pouvez vous connecter et commencez à "
 "shaare vos liens !"
 
-#: application/front/controller/visitor/InstallController.php:163
+#: application/front/controller/visitor/InstallController.php:158
 msgid "Insufficient permissions:"
 msgstr "Permissions insuffisantes :"
 
@@ -441,7 +441,7 @@ msgstr "Nom d'utilisateur ou mot de passe incorrect(s)."
 msgid "Picture wall"
 msgstr "Mur d'images"
 
-#: application/front/controller/visitor/TagCloudController.php:82
+#: application/front/controller/visitor/TagCloudController.php:80
 #, fuzzy
 #| msgid "Tag list"
 msgid "Tag "
@@ -519,6 +519,10 @@ msgstr ""
 "a été importé avec succès en %d secondes : %d liens importés, %d liens "
 "écrasés, %d liens ignorés."
 
+#: application/plugin/PluginManager.php:122
+msgid " [plugin incompatibility]: "
+msgstr " [incompatibilité de l'extension] : "
+
 #: application/plugin/exception/PluginFileNotFoundException.php:21
 #, php-format
 msgid "Plugin \"%s\" files not found."
@@ -550,11 +554,11 @@ msgstr "Shaare"
 msgid "Adds the addlink input on the linklist page."
 msgstr "Ajoute le formulaire d'ajout de liens sur la page principale."
 
-#: plugins/archiveorg/archiveorg.php:25
+#: plugins/archiveorg/archiveorg.php:26
 msgid "View on archive.org"
 msgstr "Voir sur archive.org"
 
-#: plugins/archiveorg/archiveorg.php:38
+#: plugins/archiveorg/archiveorg.php:39
 msgid "For each link, add an Archive.org icon."
 msgstr "Pour chaque lien, ajoute une icône pour Archive.org."
 
@@ -674,7 +678,7 @@ msgstr "Mauvaise réponse du hub %s"
 msgid "Enable PubSubHubbub feed publishing."
 msgstr "Active la publication de flux vers PubSubHubbub."
 
-#: plugins/qrcode/qrcode.php:72 plugins/wallabag/wallabag.php:68
+#: plugins/qrcode/qrcode.php:73 plugins/wallabag/wallabag.php:70
 msgid "For each link, add a QRCode icon."
 msgstr "Pour chaque lien, ajouter une icône de QRCode."
 
@@ -690,11 +694,11 @@ msgstr ""
 msgid "Save to wallabag"
 msgstr "Sauvegarder dans Wallabag"
 
-#: plugins/wallabag/wallabag.php:69
+#: plugins/wallabag/wallabag.php:71
 msgid "Wallabag API URL"
 msgstr "URL de l'API Wallabag"
 
-#: plugins/wallabag/wallabag.php:70
+#: plugins/wallabag/wallabag.php:72
 msgid "Wallabag API version (1 or 2)"
 msgstr "Version de l'API Wallabag (1 ou 2)"
 
diff --git a/tests/PluginManagerTest.php b/tests/PluginManagerTest.php
index 195d959c..a5d5dbe9 100644
--- a/tests/PluginManagerTest.php
+++ b/tests/PluginManagerTest.php
@@ -25,7 +25,7 @@ class PluginManagerTest extends \PHPUnit\Framework\TestCase
      */
     protected $pluginManager;
 
-    public function setUp()
+    public function setUp(): void
     {
         $conf = new ConfigManager('');
         $this->pluginManager = new PluginManager($conf);
@@ -33,10 +33,8 @@ class PluginManagerTest extends \PHPUnit\Framework\TestCase
 
     /**
      * Test plugin loading and hook execution.
-     *
-     * @return void
      */
-    public function testPlugin()
+    public function testPlugin(): void
     {
         PluginManager::$PLUGINS_PATH = self::$pluginPath;
         $this->pluginManager->load(array(self::$pluginName));
@@ -57,9 +55,28 @@ class PluginManagerTest extends \PHPUnit\Framework\TestCase
     }
 
     /**
+     * Test plugin loading and hook execution with an error: raise an incompatibility error.
+     */
+    public function testPluginWithPhpError(): void
+    {
+        PluginManager::$PLUGINS_PATH = self::$pluginPath;
+        $this->pluginManager->load(array(self::$pluginName));
+
+        $this->assertTrue(function_exists('hook_test_error'));
+
+        $data = [];
+        $this->pluginManager->executeHooks('error', $data);
+
+        $this->assertSame(
+            'test [plugin incompatibility]: Class \'Unknown\' not found',
+            $this->pluginManager->getErrors()[0]
+        );
+    }
+
+    /**
      * Test missing plugin loading.
      */
-    public function testPluginNotFound()
+    public function testPluginNotFound(): void
     {
         $this->pluginManager->load(array());
         $this->pluginManager->load(array('nope', 'renope'));
@@ -69,7 +86,7 @@ class PluginManagerTest extends \PHPUnit\Framework\TestCase
     /**
      * Test plugin metadata loading.
      */
-    public function testGetPluginsMeta()
+    public function testGetPluginsMeta(): void
     {
         PluginManager::$PLUGINS_PATH = self::$pluginPath;
         $this->pluginManager->load(array(self::$pluginName));
diff --git a/tests/container/ContainerBuilderTest.php b/tests/container/ContainerBuilderTest.php
index fa77bf31..c08010ae 100644
--- a/tests/container/ContainerBuilderTest.php
+++ b/tests/container/ContainerBuilderTest.php
@@ -9,6 +9,7 @@ use Shaarli\Bookmark\BookmarkServiceInterface;
 use Shaarli\Config\ConfigManager;
 use Shaarli\Feed\FeedBuilder;
 use Shaarli\Formatter\FormatterFactory;
+use Shaarli\Front\Controller\Visitor\ErrorController;
 use Shaarli\History;
 use Shaarli\Http\HttpAccess;
 use Shaarli\Netscape\NetscapeBookmarkUtils;
@@ -20,6 +21,7 @@ use Shaarli\Security\LoginManager;
 use Shaarli\Security\SessionManager;
 use Shaarli\Thumbnailer;
 use Shaarli\Updater\Updater;
+use Slim\Http\Environment;
 
 class ContainerBuilderTest extends TestCase
 {
@@ -59,20 +61,23 @@ class ContainerBuilderTest extends TestCase
     {
         $container = $this->containerBuilder->build();
 
-        static::assertInstanceOf(ConfigManager::class, $container->conf);
-        static::assertInstanceOf(SessionManager::class, $container->sessionManager);
+        static::assertInstanceOf(BookmarkServiceInterface::class, $container->bookmarkService);
         static::assertInstanceOf(CookieManager::class, $container->cookieManager);
-        static::assertInstanceOf(LoginManager::class, $container->loginManager);
+        static::assertInstanceOf(ConfigManager::class, $container->conf);
+        static::assertInstanceOf(ErrorController::class, $container->errorHandler);
+        static::assertInstanceOf(Environment::class, $container->environment);
+        static::assertInstanceOf(FeedBuilder::class, $container->feedBuilder);
+        static::assertInstanceOf(FormatterFactory::class, $container->formatterFactory);
         static::assertInstanceOf(History::class, $container->history);
-        static::assertInstanceOf(BookmarkServiceInterface::class, $container->bookmarkService);
+        static::assertInstanceOf(HttpAccess::class, $container->httpAccess);
+        static::assertInstanceOf(LoginManager::class, $container->loginManager);
+        static::assertInstanceOf(NetscapeBookmarkUtils::class, $container->netscapeBookmarkUtils);
         static::assertInstanceOf(PageBuilder::class, $container->pageBuilder);
-        static::assertInstanceOf(PluginManager::class, $container->pluginManager);
-        static::assertInstanceOf(FormatterFactory::class, $container->formatterFactory);
         static::assertInstanceOf(PageCacheManager::class, $container->pageCacheManager);
-        static::assertInstanceOf(FeedBuilder::class, $container->feedBuilder);
+        static::assertInstanceOf(ErrorController::class, $container->phpErrorHandler);
+        static::assertInstanceOf(PluginManager::class, $container->pluginManager);
+        static::assertInstanceOf(SessionManager::class, $container->sessionManager);
         static::assertInstanceOf(Thumbnailer::class, $container->thumbnailer);
-        static::assertInstanceOf(HttpAccess::class, $container->httpAccess);
-        static::assertInstanceOf(NetscapeBookmarkUtils::class, $container->netscapeBookmarkUtils);
         static::assertInstanceOf(Updater::class, $container->updater);
 
         // Set by the middleware
diff --git a/tests/plugins/test/test.php b/tests/plugins/test/test.php
index 2aaf5122..ae5032dd 100644
--- a/tests/plugins/test/test.php
+++ b/tests/plugins/test/test.php
@@ -19,3 +19,8 @@ function hook_test_random($data)
 
     return $data;
 }
+
+function hook_test_error()
+{
+    new Unknown();
+}