/* Chrysalide - Outil d'analyse de fichiers binaires * method.c - équivalent Python du fichier "plugins/dex/method.c" * * Copyright (C) 2018-2019 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 "method.h" #include #include #include "translate.h" #include "../method.h" #define DEX_METHOD_DOC \ "The DexMethod handles a method defined in a DEX format." \ /* Fournit les identifiants Dex concernant la méthode. */ static PyObject *py_dex_method_get_id_item(PyObject *, void *); /* Fournit les indications Dex concernant la méthode. */ static PyObject *py_dex_method_get_encoded(PyObject *, void *); /* Fournit les indications Dex relatives au corps de la méthode. */ static PyObject *py_dex_method_get_code_item(PyObject *, void *); /* Fournit la routine Chrysalide correspondant à la méthode. */ static PyObject *py_dex_method_get_routine(PyObject *, void *); /****************************************************************************** * * * Paramètres : self = objet Python concerné par l'appel. * * closure = non utilisé ici. * * * * Description : Fournit les identifiants Dex concernant la méthode. * * * * Retour : Données brutes issues du binaire chargé. * * * * Remarques : - * * * ******************************************************************************/ static PyObject *py_dex_method_get_id_item(PyObject *self, void *closure) { PyObject *result; /* Valeur à retourner */ GDexMethod *method; /* Version native */ const method_id_item *id_item; /* Elément à traiter */ #define DEX_METHOD_ID_ITEM_ATTRIB PYTHON_GET_DEF_FULL \ ( \ id_item, py_dex_method, \ "pychrysalide.StructObject instance of identifiers used by the method.\n" \ "\n" \ "All the fields are extracted from the Dex *method_id_item* structure:\n" \ "* class_idx: index into the *type_ids* list for the definer of the method ;\n" \ "* proto_idx: index into the *proto_ids* list for the prototype of the method ;\n" \ "* name_idx: index into the *string_ids* list for the name of the method." \ ) method = G_DEX_METHOD(pygobject_get(self)); id_item = g_dex_method_get_dex_id_item(method); result = translate_dex_method_id_to_python(id_item); return result; } /****************************************************************************** * * * Paramètres : self = objet Python concerné par l'appel. * * closure = non utilisé ici. * * * * Description : Fournit les indications Dex concernant la méthode. * * * * Retour : Données brutes issues du binaire chargé. * * * * Remarques : - * * * ******************************************************************************/ static PyObject *py_dex_method_get_encoded(PyObject *self, void *closure) { PyObject *result; /* Valeur à retourner */ GDexMethod *method; /* Version native */ const encoded_method *info; /* Elément à traiter */ #define DEX_METHOD_ENCODED_ATTRIB PYTHON_GET_DEF_FULL \ ( \ encoded, py_dex_method, \ "pychrysalide.StructObject instance for encoded information about the Dex method.\n" \ "\n" \ "All the fields are extracted from the Dex *encoded_method* structure:\n" \ "* method_idx_diff: index into the *method_ids* list for the identity of the method ;\n" \ "* access_flags: access flags for the method ;\n" \ "* code_off: offset from the start of the file to the code structure for the method." \ ) method = G_DEX_METHOD(pygobject_get(self)); info = g_dex_method_get_dex_info(method); result = translate_dex_method_info_to_python(info); return result; } /****************************************************************************** * * * Paramètres : self = objet Python concerné par l'appel. * * closure = non utilisé ici. * * * * Description : Fournit les indications Dex relatives au corps de la méthode.* * * * Retour : Données brutes du binaire, ou None si aucunes. * * * * Remarques : - * * * ******************************************************************************/ static PyObject *py_dex_method_get_code_item(PyObject *self, void *closure) { PyObject *result; /* Valeur à retourner */ GDexMethod *method; /* Version native */ const code_item *body; /* Elément à traiter */ #define DEX_METHOD_CODE_ITEM_ATTRIB PYTHON_GET_DEF_FULL \ ( \ code_item, py_dex_method, \ "pychrysalide.StructObject instance of code information about the Dex method," \ " or None if none.\n" \ "\n" \ "All the fields are extracted from the Dex *code_item* structure:\n" \ "* registers_size: the number of registers used by the code ;\n" \ "* ins_size: number of words of incoming arguments to the method that the code is for ;\n" \ "* outs_size: number of words of outgoing argument space required for invocation ;\n" \ "* tries_size: number of *try_items* for the instance ;\n" \ "* debug_info_off: offset from the start of the file to the debug info sequence" \ " for this code, or 0 no such information ;\n" \ "* insns_size: size of the instructions list, in 16-bit code units." \ ) method = G_DEX_METHOD(pygobject_get(self)); body = g_dex_method_get_dex_body(method); if (body == NULL) { result = Py_None; Py_INCREF(result); } else result = translate_dex_method_body_to_python(body); return result; } /****************************************************************************** * * * Paramètres : self = objet Python concerné par l'appel. * * closure = non utilisé ici. * * * * Description : Fournit la routine Chrysalide correspondant à la méthode. * * * * Retour : Instance de routine mise en place. * * * * Remarques : - * * * ******************************************************************************/ static PyObject *py_dex_method_get_routine(PyObject *self, void *closure) { PyObject *result; /* Valeur à retourner */ GDexMethod *method; /* Version native */ GBinRoutine *routine; /* Routine correspondante */ #define DEX_METHOD_ROUTINE_ATTRIB PYTHON_GET_DEF_FULL \ ( \ routine, py_dex_method, \ "DEX method as seen from Chrysalide.\n" \ "\n" \ "The result is a pychrysalide.analysis.BinRoutine instance or None." \ ) method = G_DEX_METHOD(pygobject_get(self)); routine = g_dex_method_get_routine(method); result = pygobject_new(G_OBJECT(routine)); g_object_unref(G_OBJECT(routine)); return result; } /****************************************************************************** * * * Paramètres : - * * * * Description : Fournit un accès à une définition de type à diffuser. * * * * Retour : Définition d'objet pour Python. * * * * Remarques : - * * * ******************************************************************************/ PyTypeObject *get_python_dex_method_type(void) { static PyMethodDef py_dex_method_methods[] = { { NULL } }; static PyGetSetDef py_dex_method_getseters[] = { DEX_METHOD_ID_ITEM_ATTRIB, DEX_METHOD_ENCODED_ATTRIB, DEX_METHOD_CODE_ITEM_ATTRIB, DEX_METHOD_ROUTINE_ATTRIB, { NULL } }; static PyTypeObject py_dex_method_type = { PyVarObject_HEAD_INIT(NULL, 0) .tp_name = "pychrysalide.format.dex.DexMethod", .tp_basicsize = sizeof(PyGObject), .tp_flags = Py_TPFLAGS_DEFAULT, .tp_doc = DEX_METHOD_DOC, .tp_methods = py_dex_method_methods, .tp_getset = py_dex_method_getseters }; return &py_dex_method_type; } /****************************************************************************** * * * Paramètres : module = module dont la définition est à compléter. * * * * Description : Prend en charge l'objet 'pychrysalide.format.dex.DexMethod'. * * * * Retour : Bilan de l'opération. * * * * Remarques : - * * * ******************************************************************************/ bool register_python_dex_method(PyObject *module) { PyTypeObject *type; /* Type Python 'DexMethod' */ PyObject *dict; /* Dictionnaire du module */ type = get_python_dex_method_type(); dict = PyModule_GetDict(module); if (!register_class_for_pygobject(dict, G_TYPE_DEX_METHOD, type)) return false; return true; }