[add] beefy plugin checker + failsafe plugin

GLM/glm.py

@@ -5,10 +5,13 @@
 import importlib
 if __name__ == "__main__" and __package__ == None:
     from source.libs.rainbow import color, msg
+    from source.libs.pluginbase import PluginBase, VERSION
+    from source.specialplugins import failsafe
 else:
     from .source.libs.rainbow import color, msg
+    from .source.libs.pluginbase import PluginBase, VERSION
+    from .source.specialplugins import failsafe
 
-VERSION = "0.0.3"
 PLUGIN_PREFIX = "plugins"
 PLUGIN_PACKAGE = "source.plugins"
 PLUGIN_DIRECTORY = "./source/" + PLUGIN_PREFIX + "/"
@@ -35,25 +38,73 @@ def import_plugin(plugin):
 
 
 def plugin_checker(main_plugin, start, *args):
-    """Check wether a plugin is suitable for launch or not
+    """Check whether a plugin is suitable for execution or not
+    Here are some free msg templates:
+    msg('OK', 0, 'plugin_checker', '', level=2, slevel='check')
+    msg('WARN', 1, 'plugin_checker', '', level=1, slevel='check')
+    msg('ERROR', 2, 'plugin_checker', '', level=0, slevel='check')
+    msg('FATAL', 3, 'plugin_checker', '', level=0, slevel='check')
     """
-    if not hasattr(main_plugin, "Plugin"):
-        msg("Plugin outdated", 2, "plugin_checker", level=0)
-        return False
+    if hasattr(main_plugin, "Plugin"): # Check if plugin is launchable
+        msg('OK', 0, 'plugin_checker', 'Plugin', level=3, slevel='check')
     else:
-        loaded_plugin = main_plugin.Plugin(start, *args)
-    if not hasattr(loaded_plugin, "_start"):
-        msg("Plugin outdated", 2, "plugin_checker", level=0)
-        return False
-    if not hasattr(loaded_plugin, "version"):
-        msg("Plugin outdated", 2, "plugin_checker", level=0)
-        return False
+        msg('FATAL', 3, 'plugin_checker', 'Plugin', level=0, slevel='check')
+        return None
+
+    # Launch plugin (without start)
+    loaded_plugin = main_plugin.Plugin(start, *args)
+
+    if isinstance(loaded_plugin, PluginBase):
+        msg('OK', 0, 'plugin_checker', 'PluginBase', level=2, slevel='check')
+    else:
+        msg('ERROR', 2, 'plugin_checker', 'PluginBase', level=0, slevel='check')
+
+    if hasattr(loaded_plugin, "version"): # Check versions
+        current = semver.parse_version_info(VERSION)
+        plugin = semver.parse_version_info(loaded_plugin.version)
+
+        if current.major > plugin.major: # Check X.y.z
+            e_reason = 'Major version change, please update plugin'
+            error = (e_reason, VERSION, loaded_plugin.version)
+            msg('FATAL', 3, 'plugin_checker', *error, level=0, slevel='check')
+            return None
+        if current.minor > plugin.minor: # Check x.Y.z
+            e_reason = 'New functionalities are availible, please update plugin'
+            error = (e_reason, VERSION, loaded_plugin.version)
+            msg('WARN', 1, 'plugin_checker', *error, level=1, slevel='check')
+        elif current.patch > plugin.patch: # Check x.y.Z
+            e_reason = 'Some bugs were fixed, just sayin\''
+            error = (e_reason, VERSION, loaded_plugin.version)
+            msg('WARN', 1, 'plugin_checker', *error, level=1, slevel='check')
+        else: # Version is ok
+            e_reason = 'Version ok'
+            error = (e_reason, loaded_plugin.version)
+            msg('OK', 0, 'plugin_checker', *error, level=2, slevel='check')
+
     else:
-        if loaded_plugin.version != VERSION:
-            msg("Plugin outdated", 2, "plugin_checker", loaded_plugin.version, level=0)
-            return False
-        else:
-            msg("Plugin version ok", 0, "plugin_checker", loaded_plugin.version, level=2)
+        msg('FATAL', 3, 'plugin_checker', 'No version', level=0, slevel='check')
+        return None
+
+    if hasattr(loaded_plugin, "_make_layout"): # Check if make layout exists
+        msg('OK', 0, 'plugin_checker', '_make_layout', level=2, slevel='check')
+    else:
+        e_reason = "No _make_layout"
+        msg('ERROR', 2, 'plugin_checker', e_reason, level=0, slevel='check')
+        return None
+
+    if hasattr(loaded_plugin, "_start"): # Check if start loop exists
+        msg('OK', 0, 'plugin_checker', '_start', level=2, slevel='check')
+    else:
+        msg('ERROR', 2, 'plugin_checker', 'No _start', level=0, slevel='check')
+        return None
+
+    if hasattr(loaded_plugin, "_event_loop"): # Check if event loop exists
+        msg('OK', 0, 'plugin_checker', '_event_loop', level=2, slevel='check')
+    else:
+        e_reason = 'No _event_loop'
+        msg('ERROR', 2, 'plugin_checker', e_reason, level=0, slevel='check')
+        return None
+
     return loaded_plugin
 
 
@@ -63,6 +114,10 @@ def plugin_loader(plugin, start, *args):
     if loaded_plugin:
         print_plugin_info(loaded_plugin)
         loaded_plugin = main_plugin.Plugin(True, *args)
+    else:
+        msg('ERROR', 2, 'plugin_loader', 'failsafe plugin activation')
+        loaded_plugin = failsafe.Plugin(True, *args)
+
 
 def print_plugin_info(plugin):
     if hasattr(plugin, "name"):

GLM/source/libs/pluginbase.py

@@ -4,14 +4,15 @@
 from .screen import Screen
 from .templater import Templater
 
+VERSION = "0.9.0"
+
 class PluginBase:
     def __init__(self, start, *args):
         self.name = "No name"
         self.author = "No author"
-        self.version = "0.0.3"
         if start:
             self.template = "" # Template to render
-            self._events = Queue()
+            self.__event_queue = Queue()
             self.__state = 1
             self.__rendered_data = None
             self.__pairs = {}
@@ -48,9 +49,9 @@ def __start(self):
             self.screen.refresh()
 
     def __event_loop(self):
-        self._get_events()
-        if not self._events.empty():
-            event = self._events.get()
+        self.__get_events()
+        if not self.__event_queue.empty():
+            event = self.__event_queue.get()
             msg("Event", 0, "PluginBase", event, level=4, slevel="events")
             if "LOADWEBVIEW" in event:
                 self.__data.send(self.get_rendered_data())
@@ -62,9 +63,9 @@ def __event_loop(self):
             else:
                 self._event_loop(event)
 
-    def _get_events(self):
+    def __get_events(self):
         while not self.__events.empty():
-            self._events.put(self.__events.get())
+            self.__event_queue.put(self.__events.get())
 
     def inc_state(self):
         self.__state += 1

GLM/source/plugins/template_plugin.py

@@ -4,6 +4,7 @@
 class Plugin(PluginBase):
     def __init__(self, start, *args):
         super().__init__(start, *args)
+        self.version = "0.9.0"
 
     def _make_layout(self):
         self.template = """\
@@ -12,7 +13,6 @@ def _make_layout(self):
         {{submit;button;Button}}
         """
         self.text = Text("infected")
-        self.screen.fps = 5
         self.screen.add(self.text, refresh=False)
         self.register('matrix_text', self.text.edit)
 

GLM/source/specialplugins/failsafe.py

@@ -0,0 +1,20 @@
+from ..libs.pluginbase import PluginBase
+from ..libs.text import Text
+
+class Plugin(PluginBase):
+    def __init__(self, start, *args):
+        super().__init__(start, *args)
+        self.version = "0.9.0"
+
+    def _make_layout(self):
+        self.template = """\
+        {% <h1 style='color:white;'>Error:</h1> %}
+        {{ error;label;Failed to load plugin }}"""
+        self.error = Text('$> error !')
+        self.screen.add(self.error, refresh=False, x=2, y=5)
+
+    def _start(self):
+        pass
+
+    def __event_loop(self):
+        pass