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Diffstat (limited to 'plugins/pychrysalide/glibext/storage.c')
-rw-r--r-- | plugins/pychrysalide/glibext/storage.c | 572 |
1 files changed, 572 insertions, 0 deletions
diff --git a/plugins/pychrysalide/glibext/storage.c b/plugins/pychrysalide/glibext/storage.c new file mode 100644 index 0000000..f2962bf --- /dev/null +++ b/plugins/pychrysalide/glibext/storage.c @@ -0,0 +1,572 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * storage.c - équivalent Python du fichier "glibext/storage.c" + * + * Copyright (C) 2020-2025 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 "storage.h" + + +#include <assert.h> +#include <pygobject.h> + + +#include <glibext/storage-int.h> + + +#include "serialize.h" +#include "../access.h" +#include "../helpers.h" + + + +/* ------------------------ GLUE POUR CREATION DEPUIS PYTHON ------------------------ */ + + +CREATE_DYN_CONSTRUCTOR(object_storage, G_TYPE_OBJECT_STORAGE); + +/* Initialise une instance sur la base du dérivé de GObject. */ +static int py_object_storage_init(PyObject *, PyObject *, PyObject *); + + + +/* -------------------------- TAMPON POUR CODE DESASSEMBLE -------------------------- */ + + +/* Charge le support d'une conservation d'objets en place. */ +static PyObject *py_object_storage_load(PyObject *, PyObject *); + +/* Sauvegarde le support d'une conservation d'objets en place. */ +static PyObject *py_object_storage_store(PyObject *, PyObject *); + +/* Charge un objet à partir de données rassemblées. */ +static PyObject *py_object_storage_load_object(PyObject *, PyObject *); + +/* Charge un objet interne à partir de données rassemblées. */ +static PyObject *py_object_storage_unpack_object(PyObject *, PyObject *); + +/* Sauvegarde un object sous forme de données rassemblées. */ +static PyObject *py_object_storage_store_object(PyObject *, PyObject *); + + + +/* ---------------------------------------------------------------------------------- */ +/* GLUE POUR CREATION DEPUIS PYTHON */ +/* ---------------------------------------------------------------------------------- */ + + +/****************************************************************************** +* * +* 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_object_storage_init(PyObject *self, PyObject *args, PyObject *kwds) +{ + const char *type; /* Type global de conservation */ + unsigned char version; /* Version de ce type */ + const char *uid; /* Identifiant de distinction */ + int ret; /* Bilan de lecture des args. */ + GObjectStorage *storage; /* Mécanismes natifs */ + +#define OBJECT_STORAGE_DOC \ + "The ObjectStorage object manages the generic storage of GLib" \ + " objects through serialization.\n" \ + "\n" \ + "Instances can be created using the following constructor:\n" \ + "\n" \ + " ObjectStorage(type, version uid)" \ + "\n" \ + "Where *type* is a short string describing the storage kind," \ + " *version* provides a version control for this type and *uid* is" \ + " an arbitrary unique identifier used for creating temporary files." + + /* Récupération des paramètres */ + + ret = PyArg_ParseTuple(args, "sbs", &type, &version, &uid); + if (!ret) return -1; + + /* Initialisation d'un objet GLib */ + + ret = forward_pygobjet_init(self); + if (ret == -1) return -1; + + /* Eléments de base */ + + storage = G_OBJECT_STORAGE(pygobject_get(self)); + + if (!g_object_storage_create(storage, type, version, uid)) + return -1; + + return 0; + +} + + + +/* ---------------------------------------------------------------------------------- */ +/* TAMPON POUR CODE DESASSEMBLE */ +/* ---------------------------------------------------------------------------------- */ + + +/****************************************************************************** +* * +* Paramètres : self = classe représentant une mémorisation de types. * +* args = arguments fournis à l'appel. * +* * +* Description : Charge le support d'une conservation d'objets en place. * +* * +* Retour : Gestionnaire de conservations construit ou None si erreur. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_object_storage_load(PyObject *self, PyObject *args) +{ + PyObject *result; /* Emplacement à retourner */ + const char *filename; /* Fichier de source à traiter */ + int ret; /* Bilan de lecture des args. */ + GObjectStorage *storage; /* Mécanismes natifs */ + +#define OBJECT_STORAGE_LOAD_METHOD PYTHON_METHOD_DEF \ +( \ + load, "filename, /", \ + METH_STATIC | METH_VARARGS, py_object_storage, \ + "Construct a new storage from a filename.\n" \ + "\n" \ + "The *filename* argument points to the source file to" \ + " read.\n" \ + "\n" \ + "The result is a new pychrysalide.glibext.ObjectStorage" \ + " object on success, *None* otherwise." \ +) + + ret = PyArg_ParseTuple(args, "s", &filename); + if (!ret) return NULL; + + storage = g_object_storage_load(filename); + + if (storage == NULL) + { + result = Py_None; + Py_INCREF(result); + } + else + { + result = pygobject_new(G_OBJECT(storage)); + unref_object(storage); + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : self = classe représentant une mémorisation de types. * +* args = arguments fournis à l'appel. * +* * +* Description : Sauvegarde le support d'une conservation d'objets en place. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_object_storage_store(PyObject *self, PyObject *args) +{ + PyObject *result; /* Emplacement à retourner */ + const char *filename; /* Fichier de destination */ + int ret; /* Bilan de lecture des args. */ + GObjectStorage *storage; /* Mécanismes natifs */ + bool status; /* Bilan de l'opération */ + +#define OBJECT_STORAGE_STORE_METHOD PYTHON_METHOD_DEF \ +( \ + store, "$self, filename, /", \ + METH_VARARGS, py_object_storage, \ + "Save a storage into a file.\n" \ + "\n" \ + "The *filename* argument points to the destination" \ + " file to write.\n" \ + "\n" \ + "The result is *True* on success, *False* otherwise." \ +) + + ret = PyArg_ParseTuple(args, "s", &filename); + if (!ret) return NULL; + + storage = G_OBJECT_STORAGE(pygobject_get(self)); + + status = g_object_storage_store(storage, filename); + + result = status ? Py_True : Py_False; + Py_INCREF(result); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : self = classe représentant une mémorisation de types. * +* args = arguments fournis à l'appel. * +* * +* Description : Charge un objet à partir de données rassemblées. * +* * +* Retour : Objet restauré en mémoire ou None en cas d'échec. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_object_storage_load_object(PyObject *self, PyObject *args) +{ + PyObject *result; /* Bilan à retourner */ + const char *name; /* Désignation de groupe */ + unsigned long long pos; /* Emplacement des données */ + int ret; /* Bilan de lecture des args. */ + GObjectStorage *storage; /* Mécanismes natifs */ + GSerializableObject *object; /* Objet reconstruit ou NULL */ + +#define OBJECT_STORAGE_LOAD_OBJECT_METHOD PYTHON_METHOD_DEF \ +( \ + load_object, "$self, name, pos, /", \ + METH_VARARGS, py_object_storage, \ + "Load an object from serialized data.\n" \ + "\n" \ + "The *name* is a string label for the group of target objects and" \ + " *pos* is an offset into the data stream indicating the start of" \ + " the data to unserialize.\n" \ + "\n" \ + "The result is a pychrysalide.analysis.storage.SerializableObject" \ + " instancet in case of success, or *None* in case of failure." \ +) + + ret = PyArg_ParseTuple(args, "sK", &name, &pos); + if (!ret) return NULL; + + storage = G_OBJECT_STORAGE(pygobject_get(self)); + + object = g_object_storage_load_object(storage, name, pos); + + if (object != NULL) + result = pygobject_new(G_OBJECT(object)); + else + { + result = Py_None; + Py_INCREF(result); + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : self = classe représentant une mémorisation de types. * +* args = arguments fournis à l'appel. * +* * +* Description : Charge un objet interne à partir de données rassemblées. * +* * +* Retour : Objet restauré en mémoire ou None en cas d'échec. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_object_storage_unpack_object(PyObject *self, PyObject *args) +{ + PyObject *result; /* Bilan à retourner */ + int fd; /* Flux de fonnées courant */ + const char *name; /* Désignation de groupe */ + int ret; /* Bilan de lecture des args. */ + GObjectStorage *storage; /* Mécanismes natifs */ + GSerializableObject *object; /* Objet reconstruit ou NULL */ + +#define OBJECT_STORAGE_UNPACK_OBJECT_METHOD PYTHON_METHOD_DEF \ +( \ + unpack_object, "$self, fd, name, /", \ + METH_VARARGS, py_object_storage, \ + "Load an object from a reference to serialized data.\n" \ + "\n" \ + "The *fd* argument is a file descriptor pointing to the data" \ + " stream for a current object being restored. A reference to" \ + " another object belonging to a group pointed by the string *name*" \ + " should be available at the current read position for this data" \ + " stream.\n" \ + "\n" \ + "The result is a pychrysalide.analysis.storage.SerializableObject" \ + " instancet in case of success, or *None* in case of failure." \ +) + + ret = PyArg_ParseTuple(args, "is", &fd, &name); + if (!ret) return NULL; + + storage = G_OBJECT_STORAGE(pygobject_get(self)); + + object = g_object_storage_unpack_object(storage, fd, name); + + if (object != NULL) + result = pygobject_new(G_OBJECT(object)); + else + { + result = Py_None; + Py_INCREF(result); + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : self = classe représentant une mémorisation de types. * +* args = arguments fournis à l'appel. * +* * +* Description : Sauvegarde un object sous forme de données rassemblées. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_object_storage_store_object(PyObject *self, PyObject *args) +{ + PyObject *result; /* Emplacement à retourner */ + const char *name; /* Désignation de groupe */ + GSerializableObject *object; /* Objet à traiter */ + int ret; /* Bilan de lecture des args. */ + GObjectStorage *storage; /* Mécanismes natifs */ + off64_t pos; /* Emplacement d'enregistrement*/ + bool status; /* Bilan de l'opération */ + +#define OBJECT_STORAGE_STORE_OBJECT_METHOD PYTHON_METHOD_DEF \ +( \ + store_object, "$self, name, object, /", \ + METH_VARARGS, py_object_storage, \ + "Save an object as serialized data.\n" \ + "\n" \ + "The *name* is a string label for the group of target objects" \ + " and the processed *object* has to be a" \ + " pychrysalide.analysis.storage.SerializableObject instance.\n" \ + "\n" \ + "The result is the position of the data for stored object," \ + " provided as an integer offset, in case of success or *None*" \ + " in case of failure." \ +) + + ret = PyArg_ParseTuple(args, "sO&", &name, convert_to_serializable_object, &object); + if (!ret) return NULL; + + storage = G_OBJECT_STORAGE(pygobject_get(self)); + + status = g_object_storage_store_object(storage, name, object, &pos); + + if (status) + result = PyLong_FromUnsignedLongLong((unsigned long long)pos); + 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_object_storage_type(void) +{ + static PyMethodDef py_object_storage_methods[] = { + OBJECT_STORAGE_LOAD_METHOD, + OBJECT_STORAGE_STORE_METHOD, + OBJECT_STORAGE_LOAD_OBJECT_METHOD, + OBJECT_STORAGE_UNPACK_OBJECT_METHOD, + OBJECT_STORAGE_STORE_OBJECT_METHOD, + { NULL } + }; + + static PyGetSetDef py_object_storage_getseters[] = { + { NULL } + }; + + static PyTypeObject py_object_storage_type = { + + PyVarObject_HEAD_INIT(NULL, 0) + + .tp_name = "pychrysalide.glibext.ObjectStorage", + .tp_basicsize = sizeof(PyGObject), + + .tp_flags = Py_TPFLAGS_DEFAULT, + + .tp_doc = OBJECT_STORAGE_DOC, + + .tp_methods = py_object_storage_methods, + .tp_getset = py_object_storage_getseters, + + .tp_init = py_object_storage_init, + .tp_new = py_object_storage_new + + }; + + return &py_object_storage_type; + +} + + +/****************************************************************************** +* * +* Paramètres : module = module dont la définition est à compléter. * +* * +* Description : Prend en charge l'objet 'pychrysalide.glibext.ObjectStorage'.* +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool ensure_python_object_storage_is_registered(void) +{ + PyTypeObject *type; /* Type Python 'ObjectStorage' */ + PyObject *module; /* Module à recompléter */ + PyObject *dict; /* Dictionnaire du module */ + + type = get_python_object_storage_type(); + + if (!PyType_HasFeature(type, Py_TPFLAGS_READY)) + { + module = get_access_to_python_module("pychrysalide.glibext"); + + dict = PyModule_GetDict(module); + + if (!register_class_for_pygobject(dict, G_TYPE_OBJECT_STORAGE, 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 conservateur d'objets. * +* * +* Retour : Bilan de l'opération, voire indications supplémentaires. * +* * +* Remarques : - * +* * +******************************************************************************/ + +int convert_to_object_storage(PyObject *arg, void *dst) +{ + int result; /* Bilan à retourner */ + + result = PyObject_IsInstance(arg, (PyObject *)get_python_object_storage_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 object storage"); + break; + + case 1: + *((GObjectStorage **)dst) = G_OBJECT_STORAGE(pygobject_get(arg)); + 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 conservateur d'objets ou NULL. * +* * +* Retour : Bilan de l'opération, voire indications supplémentaires. * +* * +* Remarques : - * +* * +******************************************************************************/ + +int convert_to_object_storage_or_none(PyObject *arg, void *dst) +{ + int result; /* Bilan à retourner */ + + if (arg == Py_None) + { + *((GTypeMemory **)dst) = NULL; + result = 1; + } + + else + result = convert_to_object_storage(arg, dst); + + return result; + +} |