diff options
Diffstat (limited to 'plugins/pychrysalide')
| -rw-r--r-- | plugins/pychrysalide/common/Makefile.am | 1 | ||||
| -rw-r--r-- | plugins/pychrysalide/common/entropy.c | 119 | ||||
| -rw-r--r-- | plugins/pychrysalide/common/entropy.h | 39 | ||||
| -rw-r--r-- | plugins/pychrysalide/common/module.c | 2 | ||||
| -rw-r--r-- | plugins/pychrysalide/common/xdg.c | 1 |
5 files changed, 161 insertions, 1 deletions
diff --git a/plugins/pychrysalide/common/Makefile.am b/plugins/pychrysalide/common/Makefile.am index cc87a82..43e1fc4 100644 --- a/plugins/pychrysalide/common/Makefile.am +++ b/plugins/pychrysalide/common/Makefile.am @@ -14,6 +14,7 @@ noinst_LTLIBRARIES = libpychrysacommon.la libpychrysacommon_la_SOURCES = \ bits.h bits.c \ + entropy.h entropy.c \ module.h module.c \ xdg.h xdg.c diff --git a/plugins/pychrysalide/common/entropy.c b/plugins/pychrysalide/common/entropy.c new file mode 100644 index 0000000..2817747 --- /dev/null +++ b/plugins/pychrysalide/common/entropy.c @@ -0,0 +1,119 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * entropy.c - équivalent Python du fichier "common/entropy.c" + * + * Copyright (C) 2024 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 "entropy.h" + + +#include <common/entropy.h> + + +#include "../access.h" +#include "../helpers.h" + + + +/* Détermine l'entropie d'un contenu binaire. */ +static PyObject *py_entropy_compute_entropy(PyObject *, PyObject *); + + + +/****************************************************************************** +* * +* Paramètres : self = NULL car méthode statique. * +* args = arguments fournis lors de l'appel à la fonction. * +* * +* Description : Détermine l'entropie d'un contenu binaire. * +* * +* Retour : Valeur d'entropie du contenu fourni. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_entropy_compute_entropy(PyObject *self, PyObject *args) +{ + PyObject *result; /* Instance à retourner */ + const bin_t *data; /* Données à traiter */ + int bits; /* Choix de référentiel */ + size_t len; /* Quantité de ces données */ + int ret; /* Bilan de lecture des args. */ + double entropy; /* Valeur d'entropie déterminée*/ + +#define COMPUTE_ENTROPY_METHOD PYTHON_METHOD_DEF \ +( \ + compute_entropy, "data, /, bits=False", \ + METH_VARARGS, py_entropy, \ + "Compute the entropy of provided data.\n" \ + "\n" \ + "The *data* to process can be a string or bytes." \ + " The optional *bits* argument defines if the" \ + " computed value is expressed in bits (log base 2)" \ + " or in bytes (log base 256).\n" \ + "\n" \ + "The result is a float value." \ +) + + bits = 0; + + ret = PyArg_ParseTuple(args, "s#|p", &data, &len, &bits); + if (!ret) return NULL; + + entropy = compute_entropy((const bin_t *)data, len, bits); + + result = PyFloat_FromDouble(entropy); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : - * +* * +* Description : Définit une extension du module 'common' à compléter. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool populate_common_module_with_entropy(void) +{ + bool result; /* Bilan à retourner */ + PyObject *module; /* Module à recompléter */ + + static PyMethodDef py_entropy_methods[] = { + COMPUTE_ENTROPY_METHOD, + { NULL } + }; + + module = get_access_to_python_module("pychrysalide.common"); + + result = register_python_module_methods(module, py_entropy_methods); + + return result; + +} diff --git a/plugins/pychrysalide/common/entropy.h b/plugins/pychrysalide/common/entropy.h new file mode 100644 index 0000000..3fe5e28 --- /dev/null +++ b/plugins/pychrysalide/common/entropy.h @@ -0,0 +1,39 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * entropy.h - prototypes pour l'équivalent Python du fichier "common/entropy.c" + * + * Copyright (C) 2024 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 + */ + + +#ifndef _PLUGINS_PYCHRYSALIDE_COMMON_ENTROPY_H +#define _PLUGINS_PYCHRYSALIDE_COMMON_ENTROPY_H + + +#include <Python.h> +#include <stdbool.h> + + + +/* Définit une extension du module 'common' à compléter. */ +bool populate_common_module_with_entropy(void); + + + +#endif /* _PLUGINS_PYCHRYSALIDE_COMMON_ENTROPY_H */ diff --git a/plugins/pychrysalide/common/module.c b/plugins/pychrysalide/common/module.c index 7af12ba..fa2b4de 100644 --- a/plugins/pychrysalide/common/module.c +++ b/plugins/pychrysalide/common/module.c @@ -26,6 +26,7 @@ #include "bits.h" +#include "entropy.h" //#include "fnv1a.h" //#include "hex.h" //#include "itoa.h" @@ -107,6 +108,7 @@ bool populate_common_module(void) if (result) result = populate_common_module_with_pathname(); if (result) result = populate_common_module_with_pearson(); */ + if (result) result = populate_common_module_with_entropy(); if (result) result = populate_common_module_with_xdg(); if (result) result = ensure_python_bitfield_is_registered(); diff --git a/plugins/pychrysalide/common/xdg.c b/plugins/pychrysalide/common/xdg.c index 789a0a6..e4b269e 100644 --- a/plugins/pychrysalide/common/xdg.c +++ b/plugins/pychrysalide/common/xdg.c @@ -26,7 +26,6 @@ #include <malloc.h> -#include <pygobject.h> #include <common/xdg.h> |