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/* Chrysalide - Outil d'analyse de fichiers binaires
* translate.c - conversion de structures PE en objets Python
*
* Copyright (C) 2020 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 "translate.h"
#include <assert.h>
#include <plugins/pychrysalide/struct.h>
/******************************************************************************
* *
* Paramètres : format = format PE chargé sur lequel s'appuyer. *
* header = en-tête MS-DOS à décrire en Python. *
* *
* Description : Traduit un en-tête MS-DOS en Python. *
* *
* Retour : Structure mise en place ou NULL en cas d'erreur. *
* *
* Remarques : - *
* *
******************************************************************************/
PyObject *translate_pe_dos_header_to_python(GPeFormat *format, const image_dos_header *header)
{
PyObject *result; /* Construction à retourner */
PyTypeObject *base; /* Modèle d'objet à créer */
PyObject *attrib; /* Attribut à constituer */
int ret; /* Bilan d'une mise en place */
size_t i; /* Boucle de parcours */
PyObject *item; /* Elément de tableau */
base = get_python_py_struct_type();
result = PyObject_CallFunction((PyObject *)base, NULL);
assert(result != NULL);
#define TRANSLATE_DOS_HEADER_FIELD(_f) \
do \
{ \
attrib = PyLong_FromUnsignedLongLong(header->e_ ## _f); \
ret = PyDict_SetItemString(result, "e_" #_f, attrib); \
if (ret != 0) goto failed; \
} \
while (0);
#define TRANSLATE_DOS_HEADER_FIELD_ARRAY(_f, _n) \
do \
{ \
attrib = PyTuple_New(_n); \
ret = 0; \
for (i = 0; i < _n; i++) \
{ \
item = PyLong_FromUnsignedLongLong(header->e_ ## _f [i]); \
ret = PyTuple_SetItem(attrib, i, item); \
if (ret != 0) break; \
} \
if (ret != 0) goto failed; \
ret = PyDict_SetItemString(result, "e_" #_f, attrib); \
if (ret != 0) goto failed; \
} \
while (0);
TRANSLATE_DOS_HEADER_FIELD(magic);
TRANSLATE_DOS_HEADER_FIELD(cblp);
TRANSLATE_DOS_HEADER_FIELD(cp);
TRANSLATE_DOS_HEADER_FIELD(crlc);
TRANSLATE_DOS_HEADER_FIELD(cparhdr);
TRANSLATE_DOS_HEADER_FIELD(minalloc);
TRANSLATE_DOS_HEADER_FIELD(maxalloc);
TRANSLATE_DOS_HEADER_FIELD(ss);
TRANSLATE_DOS_HEADER_FIELD(sp);
TRANSLATE_DOS_HEADER_FIELD(csum);
TRANSLATE_DOS_HEADER_FIELD(ip);
TRANSLATE_DOS_HEADER_FIELD(cs);
TRANSLATE_DOS_HEADER_FIELD(lfarlc);
TRANSLATE_DOS_HEADER_FIELD(ovno);
TRANSLATE_DOS_HEADER_FIELD_ARRAY(res, 4);
TRANSLATE_DOS_HEADER_FIELD(oemid);
TRANSLATE_DOS_HEADER_FIELD(oeminfo);
TRANSLATE_DOS_HEADER_FIELD_ARRAY(res2, 10);
TRANSLATE_DOS_HEADER_FIELD(lfanew);
return result;
failed:
Py_DECREF(result);
return NULL;
}
/******************************************************************************
* *
* Paramètres : format = format PE chargé sur lequel s'appuyer. *
* dir = répertoire PE à décrire en Python. *
* *
* Description : Traduit un répertoire PE en Python. *
* *
* Retour : Structure mise en place ou NULL en cas d'erreur. *
* *
* Remarques : - *
* *
******************************************************************************/
PyObject *translate_pe_image_data_directory_to_python(GPeFormat *format, const image_data_directory *dir)
{
PyObject *result; /* Construction à retourner */
PyTypeObject *base; /* Modèle d'objet à créer */
PyObject *attrib; /* Attribut à constituer */
int ret; /* Bilan d'une mise en place */
base = get_python_py_struct_type();
result = PyObject_CallFunction((PyObject *)base, NULL);
assert(result != NULL);
#define TRANSLATE_IMAGE_DATA_DIRECTORY_FIELD(_f) \
do \
{ \
attrib = PyLong_FromUnsignedLongLong(dir->_f); \
ret = PyDict_SetItemString(result, #_f, attrib); \
if (ret != 0) goto failed; \
} \
while (0);
TRANSLATE_IMAGE_DATA_DIRECTORY_FIELD(virtual_address);
TRANSLATE_IMAGE_DATA_DIRECTORY_FIELD(size);
return result;
failed:
Py_DECREF(result);
return NULL;
}
/******************************************************************************
* *
* Paramètres : format = format PE chargé sur lequel s'appuyer. *
* id = ensemble d'informations à décrire en Python. *
* *
* Description : Traduit une série d'informations enrichies en Python. *
* *
* Retour : Structure mise en place ou NULL en cas d'erreur. *
* *
* Remarques : - *
* *
******************************************************************************/
PyObject *translate_pe_comp_id_to_python(GPeFormat *format, const comp_id_t *id)
{
PyObject *result; /* Construction à retourner */
PyTypeObject *base; /* Modèle d'objet à créer */
PyObject *attrib; /* Attribut à constituer */
int ret; /* Bilan d'une mise en place */
base = get_python_py_struct_type();
result = PyObject_CallFunction((PyObject *)base, NULL);
assert(result != NULL);
#define TRANSLATE_COMP_ID_VALUE(_f) \
do \
{ \
attrib = PyLong_FromUnsignedLongLong(id->_f); \
ret = PyDict_SetItemString(result, #_f, attrib); \
if (ret != 0) goto failed; \
} \
while (0);
TRANSLATE_COMP_ID_VALUE(minor_cv);
TRANSLATE_COMP_ID_VALUE(prod_id);
TRANSLATE_COMP_ID_VALUE(count);
return result;
failed:
Py_DECREF(result);
return NULL;
}
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