diff options
Diffstat (limited to 'plugins/kaitai/python/records/value.c')
-rw-r--r-- | plugins/kaitai/python/records/value.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/plugins/kaitai/python/records/value.c b/plugins/kaitai/python/records/value.c deleted file mode 100644 index bd4ad74..0000000 --- a/plugins/kaitai/python/records/value.c +++ /dev/null @@ -1,335 +0,0 @@ - -/* Chrysalide - Outil d'analyse de fichiers binaires - * value.c - équivalent Python du fichier "plugins/kaitai/parsers/value.c" - * - * Copyright (C) 2019 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 "value.h" - - -#include <assert.h> -#include <pygobject.h> - - -#include <i18n.h> -#include <plugins/pychrysalide/access.h> -#include <plugins/pychrysalide/helpers.h> -#include <plugins/pychrysalide/analysis/content.h> -#include <plugins/pychrysalide/arch/vmpa.h> -#include <plugins/yaml/python/node.h> - - -#include "../record.h" -#include "../scope.h" -#include "../parsers/instance.h" -#include "../../records/value-int.h" - - - -CREATE_DYN_CONSTRUCTOR(record_value, G_TYPE_RECORD_VALUE); - -/* Initialise une instance sur la base du dérivé de GObject. */ -static int py_record_value_init(PyObject *, PyObject *, PyObject *); - -/* Lit la valeur d'un élément Kaitai entier représenté. */ -static PyObject *py_record_value_get_value(PyObject *, void *); - - - -/****************************************************************************** -* * -* Paramètres : self = objet à initialiser (théoriquement). * -* args = arguments fournis à l'appel. * -* kwds = arguments de type key=val fournis. * -* * -* Description : Initialise une instance sur la base du dérivé de GObject. * -* * -* Retour : 0. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static int py_record_value_init(PyObject *self, PyObject *args, PyObject *kwds) -{ - GKaitaiInstance *inst; /* Instance définie créatrice */ - kaitai_scope_t *locals; /* Environnement local */ - int ret; /* Bilan de lecture des args. */ - GRecordValue *value; /* Création GLib à transmettre */ - -#define RECORD_VALUE_DOC \ - "The RecordValue class stores a link to an instance used to compute a" \ - " given value." \ - "\n" \ - "Instances can be created using the following constructor:\n" \ - "\n" \ - " RecordValue(inst, locals)" \ - "\n" \ - "Where the *inst* arguments refers to a" \ - " pychrysalide.plugins.kaitai.parsers.KaitaiInstance instance as the" \ - " creator of the newly created object, *locals* points to a" \ - " pychrysalide.plugins.kaitai.KaitaiScope structure used as current scope." - - /* Récupération des paramètres */ - - ret = PyArg_ParseTuple(args, "O&O&", - convert_to_kaitai_instance, &inst, - convert_to_kaitai_scope, &locals); - if (!ret) return -1; - - /* Initialisation d'un objet GLib */ - - ret = forward_pygobjet_init(self); - if (ret == -1) return -1; - - /* Eléments de base */ - - value = G_RECORD_VALUE(pygobject_get(self)); - - if (!g_record_value_create(value, inst, locals)) - { - PyErr_SetString(PyExc_ValueError, _("Unable to create record value.")); - return -1; - } - - return 0; - -} - - -/****************************************************************************** -* * -* Paramètres : self = objet Python concerné par l'appel. * -* closure = non utilisé ici. * -* * -* Description : Lit la valeur d'un élément Kaitai entier représenté. * -* * -* Retour : Bilan de l'opération. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static PyObject *py_record_value_get_value(PyObject *self, void *closure) -{ - PyObject *result; /* Valeur à retourner */ - GRecordValue *value; /* Version native de l'élément */ - resolved_value_t resolved; /* Valeur sous forme générique */ - bool status; /* Bilan d'opération */ - -#define RECORD_VALUE_VALUE_ATTRIB PYTHON_GET_DEF_FULL \ -( \ - value, py_record_value, \ - "Carried value (as integer, bytes), or None in case of error." \ -) - - result = NULL; - - value = G_RECORD_VALUE(pygobject_get(self)); - - status = g_record_value_compute_and_aggregate_value(value, &resolved); - - if (status) - switch (resolved.type) - { - case GVT_ERROR: - assert(false); - PyErr_Format(PyExc_RuntimeError, - _("Error got while parsing Kaitai definition should not have been exported!")); - result = NULL; - break; - - case GVT_UNSIGNED_INTEGER: - result = PyLong_FromUnsignedLongLong(resolved.unsigned_integer); - break; - - case GVT_SIGNED_INTEGER: - result = PyLong_FromLongLong(resolved.signed_integer); - break; - - case GVT_FLOAT: - result = PyFloat_FromDouble(resolved.floating_number); - break; - - case GVT_BOOLEAN: - result = resolved.status ? Py_True : Py_False; - Py_INCREF(result); - break; - - case GVT_BYTES: - result = PyBytes_FromStringAndSize(resolved.bytes.data, resolved.bytes.len); - exit_szstr(&resolved.bytes); - break; - - case GVT_ARRAY: - result = pygobject_new(G_OBJECT(resolved.array)); - break; - - case GVT_RECORD: - result = pygobject_new(G_OBJECT(resolved.record)); - break; - - case GVT_STREAM: - result = pygobject_new(G_OBJECT(resolved.stream)); - break; - - } - - else - { - result = Py_None; - Py_INCREF(result); - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : - * -* * -* Description : Fournit un accès à une définition de type à diffuser. * -* * -* Retour : Définition d'objet pour Python. * -* * -* Remarques : - * -* * -******************************************************************************/ - -PyTypeObject *get_python_record_value_type(void) -{ - static PyMethodDef py_record_value_methods[] = { - { NULL } - }; - - static PyGetSetDef py_record_value_getseters[] = { - RECORD_VALUE_VALUE_ATTRIB, - { NULL } - }; - - static PyTypeObject py_record_value_type = { - - PyVarObject_HEAD_INIT(NULL, 0) - - .tp_name = "pychrysalide.plugins.kaitai.records.RecordValue", - .tp_basicsize = sizeof(PyGObject), - - .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, - - .tp_doc = RECORD_VALUE_DOC, - - .tp_methods = py_record_value_methods, - .tp_getset = py_record_value_getseters, - - .tp_init = py_record_value_init, - .tp_new = py_record_value_new, - - }; - - return &py_record_value_type; - -} - - -/****************************************************************************** -* * -* Paramètres : - * -* * -* Description : Prend en charge l'objet 'pychrysalide...records.RecordValue. * -* * -* Retour : Bilan de l'opération. * -* * -* Remarques : - * -* * -******************************************************************************/ - -bool ensure_python_record_value_is_registered(void) -{ - PyTypeObject *type; /* Type Python 'RecordValue' */ - PyObject *module; /* Module à recompléter */ - PyObject *dict; /* Dictionnaire du module */ - - type = get_python_record_value_type(); - - if (!PyType_HasFeature(type, Py_TPFLAGS_READY)) - { - module = get_access_to_python_module("pychrysalide.plugins.kaitai.records"); - - dict = PyModule_GetDict(module); - - if (!ensure_python_match_record_is_registered()) - return false; - - if (!register_class_for_pygobject(dict, G_TYPE_RECORD_VALUE, type)) - return false; - - } - - return true; - -} - - -/****************************************************************************** -* * -* Paramètres : arg = argument quelconque à tenter de convertir. * -* dst = destination des valeurs récupérées en cas de succès. * -* * -* Description : Tente de convertir en valeur calculée. * -* * -* Retour : Bilan de l'opération, voire indications supplémentaires. * -* * -* Remarques : - * -* * -******************************************************************************/ - -int convert_to_record_value(PyObject *arg, void *dst) -{ - int result; /* Bilan à retourner */ - - result = PyObject_IsInstance(arg, (PyObject *)get_python_record_value_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 record value"); - break; - - case 1: - *((GRecordValue **)dst) = G_RECORD_VALUE(pygobject_get(arg)); - break; - - default: - assert(false); - break; - - } - - return result; - -} |