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Diffstat (limited to 'plugins/pychrysalide/constants.c')
| -rw-r--r-- | plugins/pychrysalide/constants.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/plugins/pychrysalide/constants.c b/plugins/pychrysalide/constants.c new file mode 100644 index 0000000..8142284 --- /dev/null +++ b/plugins/pychrysalide/constants.c @@ -0,0 +1,215 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * constants.c - ajout des constantes des définitions de base + * + * 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 "constants.h" + + +#include <arch/archbase.h> +#include <common/datatypes.h> + + +#include "helpers.h" + + + +/****************************************************************************** +* * +* Paramètres : module = module dont le dictionnaire est à compléter. * +* * +* Description : Définit les constantes relatives aux définitions de base. * +* * +* Retour : true en cas de succès de l'opération, false sinon. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool define_data_types_constants(PyObject *module) +{ + bool result; /* Bilan à retourner */ + PyObject *values; /* Groupe de valeurs à établir */ + + values = PyDict_New(); + + result = add_const_to_group(values, "LITTLE", SRE_LITTLE); + if (result) result = add_const_to_group(values, "LITTLE_WORD", SRE_LITTLE_WORD); + if (result) result = add_const_to_group(values, "BIG_WORD", SRE_BIG_WORD); + if (result) result = add_const_to_group(values, "BIG", SRE_BIG); + + if (!result) + { + Py_DECREF(values); + goto exit; + } + + result = attach_constants_group_to_module(module, false, "SourceEndian", values, + "Endianness of handled data."); + + values = PyDict_New(); + + result = add_const_to_group(values, "UNDEFINED", MDS_UNDEFINED); + if (result) result = add_const_to_group(values, "_4_BITS_UNSIGNED", MDS_4_BITS_UNSIGNED); + if (result) result = add_const_to_group(values, "_8_BITS_UNSIGNED", MDS_8_BITS_UNSIGNED); + if (result) result = add_const_to_group(values, "_16_BITS_UNSIGNED", MDS_16_BITS_UNSIGNED); + if (result) result = add_const_to_group(values, "_32_BITS_UNSIGNED", MDS_32_BITS_UNSIGNED); + if (result) result = add_const_to_group(values, "_64_BITS_UNSIGNED", MDS_64_BITS_UNSIGNED); + if (result) result = add_const_to_group(values, "_4_BITS_SIGNED", MDS_4_BITS_SIGNED); + if (result) result = add_const_to_group(values, "_8_BITS_SIGNED", MDS_8_BITS_SIGNED); + if (result) result = add_const_to_group(values, "_16_BITS_SIGNED", MDS_16_BITS_SIGNED); + if (result) result = add_const_to_group(values, "_32_BITS_SIGNED", MDS_32_BITS_SIGNED); + if (result) result = add_const_to_group(values, "_64_BITS_SIGNED", MDS_64_BITS_SIGNED); + if (result) result = add_const_to_group(values, "_4_BITS", MDS_4_BITS_UNSIGNED); + if (result) result = add_const_to_group(values, "_8_BITS", MDS_8_BITS_UNSIGNED); + if (result) result = add_const_to_group(values, "_16_BITS", MDS_16_BITS_UNSIGNED); + if (result) result = add_const_to_group(values, "_32_BITS", MDS_32_BITS_UNSIGNED); + if (result) result = add_const_to_group(values, "_64_BITS", MDS_64_BITS_UNSIGNED); + + if (!result) + { + Py_DECREF(values); + goto exit; + } + + result = attach_constants_group_to_module(module, false, "MemoryDataSize", values, + "Size of processed data."); + + exit: + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : arg = argument quelconque à tenter de convertir. * +* dst = destination des valeurs récupérées en cas de succès. * +* * +* Description : Tente de convertir en constante SourceEndian. * +* * +* Retour : Bilan de l'opération, voire indications supplémentaires. * +* * +* Remarques : - * +* * +******************************************************************************/ + +int convert_to_source_endian(PyObject *arg, void *dst) +{ + int result; /* Bilan à retourner */ + unsigned long value; /* Valeur transcrite */ + + result = PyObject_IsInstance(arg, (PyObject *)&PyLong_Type); + + switch (result) + { + case -1: + /* L'exception est déjà fixée par Python */ + result = 0; + break; + + case 0: + PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to SourceEndian"); + break; + + case 1: + value = PyLong_AsUnsignedLong(arg); + + if (value > SRE_BIG) + { + PyErr_SetString(PyExc_TypeError, "invalid value for SourceEndian"); + result = 0; + } + + else + *((SourceEndian *)dst) = value; + + break; + + default: + assert(false); + break; + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : arg = argument quelconque à tenter de convertir. * +* dst = destination des valeurs récupérées en cas de succès. * +* * +* Description : Tente de convertir en constante MemoryDataSize. * +* * +* Retour : Bilan de l'opération, voire indications supplémentaires. * +* * +* Remarques : - * +* * +******************************************************************************/ + +int convert_to_memory_data_size(PyObject *arg, void *dst) +{ + int result; /* Bilan à retourner */ + unsigned long value; /* Valeur transcrite */ + + result = PyObject_IsInstance(arg, (PyObject *)&PyLong_Type); + + switch (result) + { + case -1: + /* L'exception est déjà fixée par Python */ + result = 0; + break; + + case 0: + PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to MemoryDataSize"); + break; + + case 1: + value = PyLong_AsUnsignedLong(arg); + + if (value != MDS_UNDEFINED + && (value < MDS_4_BITS_UNSIGNED && value > MDS_64_BITS_UNSIGNED) + && (value < MDS_4_BITS_SIGNED && value > MDS_64_BITS_SIGNED)) + { + PyErr_SetString(PyExc_TypeError, "invalid value for MemoryDataSize"); + result = 0; + } + + else + *((MemoryDataSize *)dst) = value; + + break; + + default: + assert(false); + break; + + } + + return result; + +} |