diff options
Diffstat (limited to 'plugins/pychrysalide/analysis')
-rw-r--r-- | plugins/pychrysalide/analysis/Makefile.am | 1 | ||||
-rw-r--r-- | plugins/pychrysalide/analysis/cattribs.c | 376 | ||||
-rw-r--r-- | plugins/pychrysalide/analysis/cattribs.h | 45 | ||||
-rw-r--r-- | plugins/pychrysalide/analysis/content.c | 82 | ||||
-rw-r--r-- | plugins/pychrysalide/analysis/module.c | 2 |
5 files changed, 506 insertions, 0 deletions
diff --git a/plugins/pychrysalide/analysis/Makefile.am b/plugins/pychrysalide/analysis/Makefile.am index 0405243..65f2150 100644 --- a/plugins/pychrysalide/analysis/Makefile.am +++ b/plugins/pychrysalide/analysis/Makefile.am @@ -4,6 +4,7 @@ noinst_LTLIBRARIES = libpychrysaanalysis.la libpychrysaanalysis_la_SOURCES = \ binary.h binary.c \ block.h block.c \ + cattribs.h cattribs.c \ content.h content.c \ loaded.h loaded.c \ loading.h loading.c \ diff --git a/plugins/pychrysalide/analysis/cattribs.c b/plugins/pychrysalide/analysis/cattribs.c new file mode 100644 index 0000000..be5c5b1 --- /dev/null +++ b/plugins/pychrysalide/analysis/cattribs.c @@ -0,0 +1,376 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * cattribs.c - équivalent Python du fichier "analysis/cattribs.h" + * + * 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 "cattribs.h" + + +#include <pygobject.h> + + +#include <i18n.h> + + +#include <analysis/cattribs.h> + + +#include "../access.h" +#include "../helpers.h" + + + +/* Crée un nouvel objet Python de type 'ContentAttributes'. */ +static PyObject *py_content_attributes_new(PyTypeObject *, PyObject *, PyObject *); + +/* Fournit l'ensemble des clefs d'un ensemble d'attributs. */ +static PyObject *py_content_attributes_subscript(PyObject *, PyObject *); + +/* Fournit le fichier de base compris dans le chemin initial. */ +static PyObject *py_content_attributes_get_filename(PyObject *, void *); + +/* Fournit l'ensemble des clefs d'un ensemble d'attributs. */ +static PyObject *py_content_attributes_get_keys(PyObject *, void *); + + + +/****************************************************************************** +* * +* Paramètres : type = type de l'objet à instancier. * +* args = arguments fournis à l'appel. * +* kwds = arguments de type key=val fournis. * +* * +* Description : Crée un nouvel objet Python de type 'ContentAttributes'. * +* * +* Retour : Instance Python mise en place. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_content_attributes_new(PyTypeObject *type, PyObject *args, PyObject *kwds) +{ + PyObject *result; /* Instance à retourner */ + const char *path; /* Chemin d'accès à traiter */ + int ret; /* Bilan de lecture des args. */ + GContentAttributes *attribs; /* Création GLib à transmettre */ + +#define CONTENT_ATTRIBUTES_DOC \ + "ContentAttributes is a set of values used at binary content loading.\n" \ + "\n" \ + "Such parameters are useful to transmit password for encrypted contents" \ + " for instance. These parameters can be accessed like dictionary items:\n" \ + "\n" \ + " password = attributes['password']\n" \ + " attributes['password'] = 'updated'\n" \ + "\n" \ + "Instances can be created using the following constructor:\n" \ + "\n" \ + " ContentAttributes(path)\n" \ + "\n" \ + "Where path is a list of parameters: '[...]&key0=value0&key1=value1...'" + + ret = PyArg_ParseTuple(args, "s", &path); + if (!ret) return NULL; + + attribs = g_content_attributes_new(path); + + if (attribs != NULL) + { + g_object_ref_sink(G_OBJECT(attribs)); + result = pygobject_new(G_OBJECT(attribs)); + g_object_unref(attribs); + } + else + { + result = Py_None; + Py_INCREF(result); + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : self = objet Python concerné par l'appel. * +* key = clef d'accès servant d'indice. * +* * +* Description : Fournit l'ensemble des clefs d'un ensemble d'attributs. * +* * +* Retour : Valeur associée à la clef trouvée, ou NULL en cas d'échec. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_content_attributes_subscript(PyObject *self, PyObject *key) +{ + PyObject *result; /* Valeur à retourner */ + void *keyval; /* Valeur brute de la clef */ + GContentAttributes *cattribs; /* Version native */ + const char *value; /* Valeur brute trouvée */ + + result = NULL; + + if (!PyUnicode_Check(key)) + PyErr_SetString(PyExc_TypeError, "key must be a string value"); + + else + { + keyval = PyUnicode_DATA(key); + + cattribs = G_CONTENT_ATTRIBUTES(pygobject_get(self)); + + value = g_content_attributes_get_value(cattribs, keyval); + + if (value == NULL) + PyErr_SetString(PyExc_KeyError, "attribute value not found for the provided key"); + + else + result = PyUnicode_FromString(value); + + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : self = objet Python concerné par l'appel. * +* closure = non utilisé ici. * +* * +* Description : Fournit l'ensemble des clefs d'un ensemble d'attributs. * +* * +* Retour : Liste de clefs des attributes conservés dans l'ensemble. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_content_attributes_get_keys(PyObject *self, void *closure) +{ + PyObject *result; /* Valeur à retourner */ + GContentAttributes *cattribs; /* Version native */ + size_t count; /* Nombre d'éléments à traiter */ + const char **keys; /* Clefs des attributs */ + size_t i; /* Boucle de parcours */ + +#define CONTENT_ATTRIBUTES_KEYS_ATTRIB PYTHON_GET_DEF_FULL \ +( \ + keys, py_content_attributes, \ + "Keys of all attributes contained in a set of values." \ +) + + cattribs = G_CONTENT_ATTRIBUTES(pygobject_get(self)); + + keys = g_content_attributes_get_keys(cattribs, &count); + + result = PyTuple_New(count); + + for (i = 0; i < count; i++) + PyTuple_SetItem(result, i, PyUnicode_FromString(keys[i])); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : self = objet Python concerné par l'appel. * +* closure = non utilisé ici. * +* * +* Description : Fournit le fichier de base compris dans le chemin initial. * +* * +* Retour : Nom de fichier renvoyant vers un contenu à charger ou None. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_content_attributes_get_filename(PyObject *self, void *closure) +{ + PyObject *result; /* Valeur à retourner */ + GContentAttributes *cattribs; /* Version native */ + const char *filename; /* Nom de fichier natif */ + +#define CONTENT_ATTRIBUTES_FILENAME_ATTRIB PYTHON_GET_DEF_FULL \ +( \ + filename, py_content_attributes, \ + "Filename extracted from the path provided to the attribute set," \ + " constructor, or None if no filename was defined." \ +) + + cattribs = G_CONTENT_ATTRIBUTES(pygobject_get(self)); + + filename = g_content_attributes_get_filename(cattribs); + + if (filename != NULL) + result = PyUnicode_FromString(filename); + + 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_content_attributes_type(void) +{ + static PyMappingMethods py_content_attributes_mapping = { + .mp_length = NULL, + .mp_subscript = py_content_attributes_subscript, + .mp_ass_subscript = NULL + }; + + static PyMethodDef py_content_attributes_methods[] = { + { NULL } + }; + + static PyGetSetDef py_content_attributes_getseters[] = { + CONTENT_ATTRIBUTES_FILENAME_ATTRIB, + CONTENT_ATTRIBUTES_KEYS_ATTRIB, + { NULL } + }; + + static PyTypeObject py_content_attributes_type = { + + PyVarObject_HEAD_INIT(NULL, 0) + + .tp_name = "pychrysalide.analysis.ContentAttributes", + + .tp_as_mapping = &py_content_attributes_mapping, + + .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, + + .tp_doc = CONTENT_ATTRIBUTES_DOC, + + .tp_methods = py_content_attributes_methods, + .tp_getset = py_content_attributes_getseters, + .tp_new = py_content_attributes_new + + }; + + return &py_content_attributes_type; + +} + + +/****************************************************************************** +* * +* Paramètres : - * +* * +* Description : Prend en charge l'objet 'pychrysalide.....ContentAttributes'.* +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool ensure_python_content_attributes_is_registered(void) +{ + PyTypeObject *type; /* Type 'ContentAttributes' */ + PyObject *module; /* Module à recompléter */ + PyObject *dict; /* Dictionnaire du module */ + + type = get_python_content_attributes_type(); + + if (!PyType_HasFeature(type, Py_TPFLAGS_READY)) + { + module = get_access_to_python_module("pychrysalide.analysis"); + + dict = PyModule_GetDict(module); + + if (!register_class_for_pygobject(dict, G_TYPE_CONTENT_ATTRIBUTES, type, &PyGObject_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 ensemble d'attributs pour contenu. * +* * +* Retour : Bilan de l'opération, voire indications supplémentaires. * +* * +* Remarques : - * +* * +******************************************************************************/ + +int convert_to_content_attributes(PyObject *arg, void *dst) +{ + int result; /* Bilan à retourner */ + + result = PyObject_IsInstance(arg, (PyObject *)get_python_content_attributes_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 content attributes"); + break; + + case 1: + *((GContentAttributes **)dst) = G_CONTENT_ATTRIBUTES(pygobject_get(arg)); + break; + + default: + assert(false); + break; + + } + + return result; + +} diff --git a/plugins/pychrysalide/analysis/cattribs.h b/plugins/pychrysalide/analysis/cattribs.h new file mode 100644 index 0000000..b348826 --- /dev/null +++ b/plugins/pychrysalide/analysis/cattribs.h @@ -0,0 +1,45 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * cattribs.h - prototypes pour l'équivalent Python du fichier "analysis/cattribs.h" + * + * 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 + */ + + +#ifndef _PLUGINS_PYCHRYSALIDE_ANALYSIS_CATTRIBS_H +#define _PLUGINS_PYCHRYSALIDE_ANALYSIS_CATTRIBS_H + + +#include <Python.h> +#include <stdbool.h> + + + +/* Fournit un accès à une définition de type à diffuser. */ +PyTypeObject *get_python_content_attributes_type(void); + +/* Prend en charge l'objet 'pychrysalide.analysis.ContentAttributes'. */ +bool ensure_python_content_attributes_is_registered(void); + +/* Tente de convertir en ensemble d'attributs pour contenu. */ +int convert_to_content_attributes(PyObject *, void *); + + + +#endif /* _PLUGINS_PYCHRYSALIDE_ANALYSIS_CATTRIBS_H */ diff --git a/plugins/pychrysalide/analysis/content.c b/plugins/pychrysalide/analysis/content.c index f332167..5f8694a 100644 --- a/plugins/pychrysalide/analysis/content.c +++ b/plugins/pychrysalide/analysis/content.c @@ -36,6 +36,7 @@ #include <common/endianness.h> +#include "cattribs.h" #include "../access.h" #include "../helpers.h" #include "../arch/vmpa.h" @@ -60,6 +61,12 @@ static PyObject *py_binary_content_read_u32(PyObject *, PyObject *); /* Lit un nombre non signé sur huit octets. */ static PyObject *py_binary_content_read_u64(PyObject *, PyObject *); +/* Associe un ensemble d'attributs au contenu binaire. */ +static int py_binary_content_set_attributes(PyObject *, PyObject *, void *); + +/* Fournit l'ensemble des attributs associés à un contenu. */ +static PyObject *py_binary_content_get_attributes(PyObject *, void *); + /* Fournit une empreinte unique (SHA256) pour les données. */ static PyObject *py_binary_content_get_checksum(PyObject *, void *); @@ -348,6 +355,80 @@ static PyObject *py_binary_content_read_u64(PyObject *self, PyObject *args) /****************************************************************************** * * * Paramètres : self = contenu binaire à manipuler. * +* value = jeu d'attributs à lier au contenu courant. * +* closure = adresse non utilisée ici. * +* * +* Description : Associe un ensemble d'attributs au contenu binaire. * +* * +* Retour : Jeu d'attributs liés au contenu courant. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static int py_binary_content_set_attributes(PyObject *self, PyObject *value, void *closure) +{ + int result; /* Bilan à renvoyer */ + GBinContent *content; /* Version GLib du format */ + GContentAttributes *attribs; /* Version native des attributs*/ + + content = G_BIN_CONTENT(pygobject_get(self)); + + if (!convert_to_content_attributes(value, &attribs)) + result = -1; + + else + { + g_binary_content_set_attributes(content, attribs); + result = 0; + } + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : self = contenu binaire à manipuler. * +* closure = adresse non utilisée ici. * +* * +* Description : Fournit l'ensemble des attributs associés à un contenu. * +* * +* Retour : Jeu d'attributs liés au contenu courant. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static PyObject *py_binary_content_get_attributes(PyObject *self, void *closure) +{ + PyObject *result; /* Instance à retourner */ + GBinContent *content; /* Version GLib du format */ + GContentAttributes *attribs; /* Attributs à transmettre */ + +#define BINARY_CONTENT_ATTRIBUTES_ATTRIB PYTHON_GETSET_DEF_FULL \ +( \ + attributes, py_binary_content, \ + "Provide or define the attributes linked to the binary content." \ +) + + content = G_BIN_CONTENT(pygobject_get(self)); + + attribs = g_binary_content_get_attributes(content); + + result = pygobject_new(G_OBJECT(attribs)); + + g_object_unref(attribs); + + return result; + +} + + +/****************************************************************************** +* * +* Paramètres : self = contenu binaire à manipuler. * * closure = adresse non utilisée ici. * * * * Description : Fournit une empreinte unique (SHA256) pour les données. * @@ -552,6 +633,7 @@ PyTypeObject *get_python_binary_content_type(void) }; static PyGetSetDef py_binary_content_getseters[] = { + BINARY_CONTENT_ATTRIBUTES_ATTRIB, { "checksum", py_binary_content_get_checksum, NULL, "Compute a SHA256 hash as chechsum of handled data.", NULL diff --git a/plugins/pychrysalide/analysis/module.c b/plugins/pychrysalide/analysis/module.c index cf0671e..1a9a1d9 100644 --- a/plugins/pychrysalide/analysis/module.c +++ b/plugins/pychrysalide/analysis/module.c @@ -30,6 +30,7 @@ #include "binary.h" #include "block.h" +#include "cattribs.h" #include "content.h" #include "loaded.h" #include "loading.h" @@ -111,6 +112,7 @@ bool populate_analysis_module(void) if (result) result = ensure_python_loaded_binary_is_registered(); if (result) result = ensure_python_code_block_is_registered(); if (result) result = ensure_python_block_list_is_registered(); + if (result) result = ensure_python_content_attributes_is_registered(); if (result) result = ensure_python_binary_content_is_registered(); if (result) result = ensure_python_loaded_content_is_registered(); if (result) result = ensure_python_content_explorer_is_registered(); |