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Diffstat (limited to 'plugins/encodings/python/base64.c')
| -rw-r--r-- | plugins/encodings/python/base64.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/plugins/encodings/python/base64.c b/plugins/encodings/python/base64.c new file mode 100644 index 0000000..3bc84a2 --- /dev/null +++ b/plugins/encodings/python/base64.c @@ -0,0 +1,139 @@ + +/* 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; + +} |