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/* Chrysalide - Outil d'analyse de fichiers binaires
* base64.c - équivalent Python du fichier "plugins/encodings/base64.c"
*
* Copyright (C) 2023 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 "base64.h"
#include <pygobject.h>
#include <plugins/pychrysalide/access.h>
#include <plugins/pychrysalide/helpers.h>
#include "../base64.h"
/* Procède à l'encodage d'un contenu en base 64. */
static PyObject *py_encodings_base64_encode(PyObject *, PyObject *);
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* args = paramètre à récupérer pour le traitement. *
* *
* Description : Procède à l'encodage d'un contenu en base 64. *
* *
* Retour : None ou données sortantes constituées. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_encodings_base64_encode(PyObject *self, PyObject *args)
{
PyObject *result; /* Valeur à retourner */
sized_string_t alphabet; /* Alphabet de traitement ? */
Py_ssize_t alen; /* Taille de cet alphabet */
sized_binary_t input; /* Données à traiter */
Py_ssize_t ilen; /* Quantité de ces données */
int ret; /* Bilan de lecture des args. */
sized_string_t output; /* Données encodées à exporter */
bool status; /* Bilan de l'opération */
#define ENCODINGS_BASE64_ENCODE_METHOD PYTHON_METHOD_DEF \
( \
base64_encode, "input, /, alphabet=None", \
METH_VARARGS, py_encodings, \
"Encode a given content using Base64.\n" \
"\n" \
"The *input* argument has to be provided as bytes. The optional" \
" *alphabet* is expected to be a 64-byte array if defined.\n" \
"\n" \
"The returned value is bytes or *None* in case of error." \
)
result = NULL;
alphabet.data = NULL;
alen = 0;
ret = PyArg_ParseTuple(args, "s#|s#", &input.static_data, &ilen, &alphabet.static_data, &alen);
if (!ret) goto exit;
alphabet.len = alen;
input.len = ilen;
if (alphabet.len > 0)
status = _base64_encode(&input, &output, &alphabet);
else
status = base64_encode(&input, &output);
if (status)
{
result = PyBytes_FromStringAndSize(output.data, output.len);
exit_szstr(&output);
}
else
{
result = Py_None;
Py_INCREF(result);
}
exit:
return result;
}
/******************************************************************************
* *
* Paramètres : super = module dont la définition est à compléter. *
* *
* Description : Définit une extension du module 'encodings' à compléter. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool populate_encodings_module_with_base64(PyObject *super)
{
bool result; /* Bilan à retourner */
static PyMethodDef py_base64_methods[] = {
ENCODINGS_BASE64_ENCODE_METHOD,
{ NULL }
};
result = register_python_module_methods(super, py_base64_methods);
return result;
}
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