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/* Chrysalide - Outil d'analyse de fichiers binaires
* secstorage.c - équivalent Python du fichier "core/secstorage.c"
*
* Copyright (C) 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 "secstorage.h"
#include <core/secstorage.h>
#include "../access.h"
#include "../convert.h"
#include "../helpers.h"
/* Détermine si une clef de chiffrement protégée est en place. */
static PyObject *py_secstorage_has_secret_storage_key(PyObject *, PyObject *);
/* Définit un mot de passe pour protéger une clef maître. */
static PyObject *py_secstorage_set_secret_storage_password(PyObject *, PyObject *);
/* Détermine si la clef de chiffrement maître est vérouillée. */
static PyObject *py_secstorage_is_secret_storage_locked(PyObject *, PyObject *);
/* Déverrouille la clef de chiffrement maître. */
static PyObject *py_secstorage_unlock_secret_storage(PyObject *, PyObject *);
/* Verrouille la clef de chiffrement maître. */
static PyObject *py_secstorage_lock_secret_storage(PyObject *, PyObject *);
/* Chiffre des données avec la clef de chiffrement maître. */
static PyObject *py_secstorage_encrypt_secret_storage_data(PyObject *, PyObject *);
/* Déchiffre des données avec la clef de chiffrement maître. */
static PyObject *py_secstorage_decrypt_secret_storage_data(PyObject *, PyObject *);
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* args = arguments fournis à l'appel. *
* *
* Description : Détermine si un mot de passe est actuellement en place. *
* *
* Retour : Bilan de l'analyse. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_secstorage_has_secret_storage_key(PyObject *self, PyObject *args)
{
PyObject *result; /* Conversion à retourner */
GSettings *settings; /* Configuration à considérer */
int ret; /* Bilan de lecture des args. */
bool status; /* Bilan de situation */
#define SECSTORAGE_HAS_SECRET_STORAGE_KEY_METHOD PYTHON_METHOD_DEF \
( \
has_secret_storage_key, "/, settings=None", \
METH_VARARGS, py_secstorage, \
"Indicate if a master key used for protecting secrets seems to have"\
" been defined.\n" \
"\n" \
"The *settings* arguement must point to a GSettings intance; the" \
" main configuration settings are used by default.\n" \
"\n" \
"The result is a boolean status: *True* if the master key seems" \
" to exist, *False* otherwise." \
)
ret = PyArg_ParseTuple(args, "O&", convert_to_gsettings, &settings);
if (!ret) return NULL;
status = has_secret_storage_key(settings);
result = status ? Py_True : Py_False;
Py_INCREF(result);
return result;
}
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* args = arguments fournis à l'appel. *
* *
* Description : Définit un mot de passe pour protéger une clef maître. *
* *
* Retour : Bilan de la mise en place. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_secstorage_set_secret_storage_password(PyObject *self, PyObject *args)
{
PyObject *result; /* Conversion à retourner */
GSettings *settings; /* Configuration à considérer */
const char *passwd; /* Mot de passe associé */
int ret; /* Bilan de lecture des args. */
bool status; /* Bilan de situation */
#define SECSTORAGE_SET_SECRET_STORAGE_PASSWORD_METHOD PYTHON_METHOD_DEF \
( \
set_secret_storage_password, "/, settings=None, password=''", \
METH_VARARGS, py_secstorage, \
"Create a master key used for protecting secrets. This key is" \
" itself protected by the provided password.\n" \
"\n" \
"The *settings* arguement must point to a GSettings intance; the" \
" main configuration settings are used by default. The supplied" \
" *password* has to be a string.\n" \
"\n" \
"The result is a boolean status: *True* if the operation successed,"\
" *False* otherwise." \
)
settings = NULL;
passwd = "";
ret = PyArg_ParseTuple(args, "|O&s", convert_to_gsettings, &settings, &passwd);
if (!ret) return NULL;
status = set_secret_storage_password(settings, passwd);
result = status ? Py_True : Py_False;
Py_INCREF(result);
return result;
}
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* args = arguments fournis à l'appel. *
* *
* Description : Détermine si la clef de chiffrement maître est vérouillée. *
* *
* Retour : Bilan de la détermination. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_secstorage_is_secret_storage_locked(PyObject *self, PyObject *args)
{
PyObject *result; /* Conversion à retourner */
GSettings *settings; /* Configuration à considérer */
int ret; /* Bilan de lecture des args. */
bool status; /* Bilan de situation */
#define SECSTORAGE_IS_SECRET_STORAGE_LOCKED_METHOD PYTHON_METHOD_DEF \
( \
is_secret_storage_locked, "/, settings=None", \
METH_VARARGS, py_secstorage, \
"Indicate if the master key used for protecting secrets is" \
" currently decrypted in memory.\n" \
"\n" \
"The *settings* arguement must point to a GSettings intance; the" \
" main configuration settings are used by default.\n" \
"\n" \
"The result is a boolean status: *True* if the master key is" \
" unlocked and ready for use, *False* otherwise." \
)
settings = NULL;
ret = PyArg_ParseTuple(args, "|O&", convert_to_gsettings, &settings);
if (!ret) return NULL;
status = is_secret_storage_locked(settings);
result = status ? Py_True : Py_False;
Py_INCREF(result);
return result;
}
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* args = arguments fournis à l'appel. *
* *
* Description : Déverrouille la clef de chiffrement maître. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_secstorage_unlock_secret_storage(PyObject *self, PyObject *args)
{
PyObject *result; /* Conversion à retourner */
GSettings *settings; /* Configuration à considérer */
const char *passwd; /* Mot de passe associé */
int ret; /* Bilan de lecture des args. */
bool status; /* Bilan de situation */
#define SECSTORAGE_UNLOCK_SECRET_STORAGE_METHOD PYTHON_METHOD_DEF \
( \
unlock_secret_storage, "/, settings=None, password=''", \
METH_VARARGS, py_secstorage, \
"Decrypt in memory the master key used for protecting secrets.\n" \
"\n" \
"The *settings* arguement must point to a GSettings intance; the" \
" main configuration settings are used by default. The supplied" \
" *password* is the primary password used to protect this key.\n" \
"\n" \
"The result is a boolean status: *True* if the operation successed" \
" or if the master key is already unlocked, *False* otherwise." \
)
settings = NULL;
passwd = "";
ret = PyArg_ParseTuple(args, "|O&s", convert_to_gsettings, &settings, &passwd);
if (!ret) return NULL;
status = unlock_secret_storage(settings, passwd);
result = status ? Py_True : Py_False;
Py_INCREF(result);
return result;
}
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* args = arguments fournis à l'appel. *
* *
* Description : Verrouille la clef de chiffrement maître. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_secstorage_lock_secret_storage(PyObject *self, PyObject *args)
{
PyObject *result; /* Conversion à retourner */
GSettings *settings; /* Configuration à considérer */
int ret; /* Bilan de lecture des args. */
#define SECSTORAGE_LOCK_SECRET_STORAGE_METHOD PYTHON_METHOD_DEF \
( \
lock_secret_storage, "/, settings=None", \
METH_VARARGS, py_secstorage, \
"Clear from memory the master key used for protecting secrets.\n" \
"\n" \
"The *settings* arguement must point to a GSettings intance; the" \
" main configuration settings are used by default." \
)
settings = NULL;
ret = PyArg_ParseTuple(args, "|O&", convert_to_gsettings, &settings);
if (!ret) return NULL;
lock_secret_storage(settings);
result = Py_None;
Py_INCREF(result);
return result;
}
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* args = arguments fournis à l'appel. *
* *
* Description : Chiffre des données avec la clef de chiffrement maître. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_secstorage_encrypt_secret_storage_data(PyObject *self, PyObject *args)
{
PyObject *result; /* Conversion à retourner */
const char *data_in; /* Données d'entrée à chiffrer */
Py_ssize_t size_in; /* Quantité de ces données */
GSettings *settings; /* Configuration à considérer */
int ret; /* Bilan de lecture des args. */
sized_binary_t in; /* Données à chiffer */
bool status; /* Bilan de situation */
sized_binary_t out; /* Données chiffrées */
#define SECSTORAGE_ENCRYPT_SECRET_STORAGE_DATA_METHOD PYTHON_METHOD_DEF \
( \
encrypt_secret_storage_data, "data, /, settings=None", \
METH_VARARGS, py_secstorage, \
"Encrypt data using an unlocked the master key.\n" \
"\n" \
"The *settings* arguement must point to a GSettings intance; the" \
" main configuration settings are used by default." \
"\n" \
"The result is either encrypted data as bytes in case of success," \
" or *None* in case of failure." \
)
settings = NULL;
ret = PyArg_ParseTuple(args, "s#|O&", &data_in, &size_in, convert_to_gsettings, &settings);
if (!ret) return NULL;
in.static_data = data_in;
in.size = size_in;
status = encrypt_secret_storage_data(settings, &in, &out);
if (status)
{
result = PyBytes_FromStringAndSize(out.static_data, out.size);
exit_sized_binary(&out);
}
else
{
result = Py_None;
Py_INCREF(result);
}
return result;
}
/******************************************************************************
* *
* Paramètres : self = objet Python concerné par l'appel. *
* args = arguments fournis à l'appel. *
* *
* Description : Déchiffre des données avec la clef de chiffrement maître. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_secstorage_decrypt_secret_storage_data(PyObject *self, PyObject *args)
{
PyObject *result; /* Conversion à retourner */
const char *data_in; /* Données d'entrée à chiffrer */
Py_ssize_t size_in; /* Quantité de ces données */
GSettings *settings; /* Configuration à considérer */
int ret; /* Bilan de lecture des args. */
sized_binary_t in; /* Données à chiffer */
bool status; /* Bilan de situation */
sized_binary_t out; /* Données chiffrées */
#define SECSTORAGE_DECRYPT_SECRET_STORAGE_DATA_METHOD PYTHON_METHOD_DEF \
( \
decrypt_secret_storage_data, "data, /, settings=None", \
METH_VARARGS, py_secstorage, \
"Decrypt data using an unlocked the master key.\n" \
"\n" \
"The *settings* arguement must point to a GSettings intance; the" \
" main configuration settings are used by default." \
"\n" \
"The result is either decrypted data as bytes in case of success," \
" or *None* in case of failure." \
)
settings = NULL;
ret = PyArg_ParseTuple(args, "s#|O&", &data_in, &size_in, convert_to_gsettings, &settings);
if (!ret) return NULL;
in.static_data = data_in;
in.size = size_in;
status = decrypt_secret_storage_data(settings, &in, &out);
if (status)
{
result = PyBytes_FromStringAndSize(out.static_data, out.size);
exit_sized_binary(&out);
}
else
{
result = Py_None;
Py_INCREF(result);
}
return result;
}
/******************************************************************************
* *
* Paramètres : - *
* *
* Description : Définit une extension du module 'core' à compléter. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool populate_core_module_with_secstorage(void)
{
bool result; /* Bilan à retourner */
PyObject *module; /* Module à recompléter */
static PyMethodDef py_secstorage_methods[] = {
SECSTORAGE_HAS_SECRET_STORAGE_KEY_METHOD,
SECSTORAGE_SET_SECRET_STORAGE_PASSWORD_METHOD,
SECSTORAGE_IS_SECRET_STORAGE_LOCKED_METHOD,
SECSTORAGE_UNLOCK_SECRET_STORAGE_METHOD,
SECSTORAGE_LOCK_SECRET_STORAGE_METHOD,
SECSTORAGE_ENCRYPT_SECRET_STORAGE_DATA_METHOD,
SECSTORAGE_DECRYPT_SECRET_STORAGE_DATA_METHOD,
{ NULL }
};
module = get_access_to_python_module("pychrysalide.core");
result = register_python_module_methods(module, py_secstorage_methods);
return result;
}
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