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/* 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 <pygobject.h>
#include <plugins/pychrysalide/helpers.h>
#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;
}
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