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/* Chrysalide - Outil d'analyse de fichiers binaires
* format.c - équivalent Python du fichier "plugins/elf/format.c"
*
* Copyright (C) 2013-2017 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 "format.h"
#include <pygobject.h>
#include <i18n.h>
#include <format/executable.h>
#include <analysis/content.h>
#include <plugins/pychrysalide/helpers.h>
#include <plugins/pychrysalide/analysis/content.h>
#include <plugins/pychrysalide/format/executable.h>
#include "constants.h"
#include "dynamic.h"
#include "elf_def.h"
#include "program.h"
#include "section.h"
#include "translate.h"
#include "../format.h"
/* Crée un nouvel objet Python de type 'ElfFormat'. */
static PyObject *py_elf_format_new(PyTypeObject *, PyObject *, PyObject *);
/* Fournit l'en-tête Elf correspondant au format. */
static PyObject *py_elf_format_get_header(PyObject *, PyObject *);
/******************************************************************************
* *
* Paramètres : type = type de l'objet à instancier. *
* args = arguments fournis à l'appel. *
* kwds = arguments de type key=val fournis. *
* *
* Description : Crée un nouvel objet Python de type 'ElfFormat'. *
* *
* Retour : Instance Python mise en place. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_elf_format_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
PyObject *result; /* Instance à retourner */
PyObject *content_obj; /* Objet pour le contenu */
int ret; /* Bilan de lecture des args. */
GBinContent *content; /* Instance GLib du contenu */
GExeFormat *format; /* Création GLib à transmettre */
ret = PyArg_ParseTuple(args, "O!", get_python_binary_content_type(), &content_obj);
if (!ret) return NULL;
content = G_BIN_CONTENT(pygobject_get(content_obj));
format = g_elf_format_new(content);
assert(format != NULL);
result = pygobject_new(G_OBJECT(format));
g_object_unref(format);
return (PyObject *)result;
}
/******************************************************************************
* *
* Paramètres : self = contenu binaire à manipuler. *
* args = argument non utilisé ici. *
* *
* Description : Fournit l'en-tête Elf correspondant au format. *
* *
* Retour : Structure Python créée pour l'occasion. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_elf_format_get_header(PyObject *self, PyObject *args)
{
PyObject *result; /* Trouvaille à retourner */
GElfFormat *format; /* Version GLib du format */
format = G_ELF_FORMAT(pygobject_get(self));
result = translate_elf_header_to_python(format, g_elf_format_get_header(format));
return result;
}
/******************************************************************************
* *
* Paramètres : - *
* *
* Description : Fournit un accès à une définition de type à diffuser. *
* *
* Retour : Définition d'objet pour Python. *
* *
* Remarques : - *
* *
******************************************************************************/
PyTypeObject *get_python_elf_format_type(void)
{
static PyMethodDef py_elf_format_methods[] = {
{
"get_header", py_elf_format_get_header,
METH_NOARGS,
"get_header($self, /)\n--\n\nGet the Elf header."
},
{
"find_program_by_index", py_elf_format_find_program_by_index,
METH_VARARGS,
"find_program_by_index($self, index, /)\n--\n\nFind a segment using a given index."
},
{
"find_program_by_type", py_elf_format_find_program_by_type,
METH_VARARGS,
"find_program_by_type($self, type, /)\n--\n\nFind a segment using a given type."
},
{
"find_section_by_index", py_elf_format_find_section_by_index,
METH_VARARGS,
"find_section_by_index($self, index, /)\n--\n\nFind a section using a given index."
},
{
"find_section_by_name", py_elf_format_find_section_by_name,
METH_VARARGS,
"find_section_by_name($self, name, /)\n--\n\nFind a section using a given name."
},
{
"find_section_by_virtual_address", py_elf_format_find_section_by_virtual_address,
METH_VARARGS,
"find_section_by_virtual_address($self, addr, /)\n--\n\nFind a section using a given virtual address."
},
{
"find_sections_by_type", py_elf_format_find_sections_by_type,
METH_VARARGS,
"find_sections_by_type($self, type, /)\n--\n\nFind sections using a given type."
},
{
"find_dynamic_item_by_index", py_elf_format_find_dynamic_item_by_index,
METH_VARARGS,
"find_dynamic_item_by_type($self, type, /)\n--\n\nFind an item from the dynamic segment using a given index."
},
{ NULL }
};
static PyGetSetDef py_elf_format_getseters[] = {
{
"sizeof_hdr", py_elf_format_get_sizeof_hdr, NULL,
"Provide the size of Elf_Ehdr structures for the loaded format.", NULL
},
{
"sizeof_phdr", py_elf_format_get_sizeof_phdr, NULL,
"Provide the size of Elf_Phdr structures for the loaded format.", NULL
},
{
"sizeof_shdr", py_elf_format_get_sizeof_shdr, NULL,
"Provide the size of Elf_Shdr structures for the loaded format.", NULL
},
{
"sizeof_dyn", py_elf_format_get_sizeof_dyn, NULL,
"Provide the size of Elf_Dyn structures for the loaded format.", NULL
},
{
"sizeof_sym", py_elf_format_get_sizeof_sym, NULL,
"Provide the size of Elf_Sym structures for the loaded format.", NULL
},
{
"sizeof_rel", py_elf_format_get_sizeof_rel, NULL,
"Provide the size of Elf_Rel structures for the loaded format.", NULL
},
{
"needed", py_elf_format_get_needed, NULL,
"Provide the list of requiered shared objects.", NULL
},
{ NULL }
};
static PyTypeObject py_elf_format_type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "pychrysalide.format.elf.ElfFormat",
.tp_basicsize = sizeof(PyGObject),
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = "PyChrysalide Elf format",
.tp_methods = py_elf_format_methods,
.tp_getset = py_elf_format_getseters,
.tp_new = (newfunc)py_elf_format_new
};
return &py_elf_format_type;
}
/******************************************************************************
* *
* Paramètres : module = module dont la définition est à compléter. *
* *
* Description : Prend en charge l'objet 'pychrysalide.format.elf.ElfFormat'. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool register_python_elf_format(PyObject *module)
{
PyTypeObject *py_elf_format_type; /* Type Python 'ElfFormat' */
PyObject *dict; /* Dictionnaire du module */
py_elf_format_type = get_python_elf_format_type();
dict = PyModule_GetDict(module);
if (!register_class_for_pygobject(dict, G_TYPE_ELF_FORMAT,
py_elf_format_type, get_python_executable_format_type()))
return false;
if (!define_python_binary_format_constants(py_elf_format_type))
return false;
return true;
}
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