Relied on GObject introspection and dynamic gtypes to inherit in Python.

1 files changed, 163 insertions, 0 deletions

diff --git a/plugins/pychrysalide/arch/context.c b/plugins/pychrysalide/arch/context.c
new file mode 100644
index 0000000..4428075
--- /dev/null
+++ b/plugins/pychrysalide/arch/context.c
@@ -0,0 +1,163 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * context.c - équivalent Python du fichier "arch/context.h"
+ *
+ * Copyright (C) 2018 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Chrysalide is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "context.h"
+
+
+#include <assert.h>
+#include <pygobject.h>
+
+
+#include <arch/context.h>
+
+
+#include "../access.h"
+#include "../helpers.h"
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Fournit un accès à une définition de type à diffuser.        *
+*                                                                             *
+*  Retour      : Définition d'objet pour Python.                              *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+PyTypeObject *get_python_proc_context_type(void)
+{
+    static PyMethodDef py_proc_context_methods[] = {
+        { NULL }
+    };
+
+    static PyGetSetDef py_proc_context_getseters[] = {
+        { NULL }
+    };
+
+    static PyTypeObject py_proc_context_type = {
+
+        PyVarObject_HEAD_INIT(NULL, 0)
+
+        .tp_name        = "pychrysalide.arch.ProcContext",
+        .tp_basicsize   = sizeof(PyGObject),
+
+        .tp_flags       = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_BASETYPE,
+
+        .tp_doc         = "PyChrysalide disassembly context.",
+
+        .tp_methods     = py_proc_context_methods,
+        .tp_getset      = py_proc_context_getseters,
+
+    };
+
+    return &py_proc_context_type;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : module = module dont la définition est à compléter.          *
+*                                                                             *
+*  Description : Prend en charge l'objet 'pychrysalide.arch.ArchContext'.     *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool ensure_python_proc_context_is_registered(void)
+{
+    PyTypeObject *type;                     /* Type Python 'ArchContext'   */
+    PyObject *module;                       /* Module à recompléter        */
+    PyObject *dict;                         /* Dictionnaire du module      */
+
+    type = get_python_proc_context_type();
+
+    if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
+    {
+        APPLY_ABSTRACT_FLAG(type);
+
+        module = get_access_to_python_module("pychrysalide.arch");
+
+        dict = PyModule_GetDict(module);
+
+        if (!register_class_for_pygobject(dict, G_TYPE_PROC_CONTEXT, type, &PyGObject_Type))
+            return false;
+
+    }
+
+    return true;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : arg = argument quelconque à tenter de convertir.             *
+*                dst = destination des valeurs récupérées en cas de succès.   *
+*                                                                             *
+*  Description : Tente de convertir en contexte de désassemblage.             *
+*                                                                             *
+*  Retour      : Bilan de l'opération, voire indications supplémentaires.     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+int convert_to_proc_context(PyObject *arg, void *dst)
+{
+    int result;                             /* Bilan à retourner           */
+
+    result = PyObject_IsInstance(arg, (PyObject *)get_python_proc_context_type());
+
+    switch (result)
+    {
+        case -1:
+            /* L'exception est déjà fixée par Python */
+            result = 0;
+            break;
+
+        case 0:
+            PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to disassembly context");
+            break;
+
+        case 1:
+            *((GProcContext **)dst) = G_PROC_CONTEXT(pygobject_get(arg));
+            break;
+
+        default:
+            assert(false);
+            break;
+
+    }
+
+    return result;
+
+}