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authorCyrille Bagard <nocbos@gmail.com>2023-10-06 08:55:34 (GMT)
committerCyrille Bagard <nocbos@gmail.com>2023-10-06 08:55:34 (GMT)
commit2553a987f2d8ba35d839152a35392ca29b409841 (patch)
tree5388aa8f2432791963e3a92d0c8845908e33db37 /plugins/pychrysalide/analysis/scan
parent1e28e6b94d5561129162d760d99bcf1e81f9528c (diff)
Extend the Python API for ROST (items and literals).
Diffstat (limited to 'plugins/pychrysalide/analysis/scan')
-rw-r--r--plugins/pychrysalide/analysis/scan/Makefile.am3
-rw-r--r--plugins/pychrysalide/analysis/scan/context.c89
-rw-r--r--plugins/pychrysalide/analysis/scan/expr.c2
-rw-r--r--plugins/pychrysalide/analysis/scan/exprs/Makefile.am15
-rw-r--r--plugins/pychrysalide/analysis/scan/exprs/constants.c128
-rw-r--r--plugins/pychrysalide/analysis/scan/exprs/constants.h42
-rw-r--r--plugins/pychrysalide/analysis/scan/exprs/literal.c281
-rw-r--r--plugins/pychrysalide/analysis/scan/exprs/literal.h45
-rw-r--r--plugins/pychrysalide/analysis/scan/exprs/module.c103
-rw-r--r--plugins/pychrysalide/analysis/scan/exprs/module.h42
-rw-r--r--plugins/pychrysalide/analysis/scan/item.c413
-rw-r--r--plugins/pychrysalide/analysis/scan/module.c3
12 files changed, 1153 insertions, 13 deletions
diff --git a/plugins/pychrysalide/analysis/scan/Makefile.am b/plugins/pychrysalide/analysis/scan/Makefile.am
index 0b20ca5..8c9fb77 100644
--- a/plugins/pychrysalide/analysis/scan/Makefile.am
+++ b/plugins/pychrysalide/analysis/scan/Makefile.am
@@ -13,6 +13,7 @@ libpychrysaanalysisscan_la_SOURCES = \
space.h space.c
libpychrysaanalysisscan_la_LIBADD = \
+ exprs/libpychrysaanalysisscanexprs.la \
patterns/libpychrysaanalysisscanpatterns.la
libpychrysaanalysisscan_la_CFLAGS = $(LIBPYTHON_INTERPRETER_CFLAGS) $(LIBPYGOBJECT_CFLAGS) $(TOOLKIT_CFLAGS) \
@@ -24,4 +25,4 @@ devdir = $(includedir)/chrysalide/$(subdir)
dev_HEADERS = $(libpychrysaanalysisscan_la_SOURCES:%c=)
-SUBDIRS = patterns
+SUBDIRS = exprs patterns
diff --git a/plugins/pychrysalide/analysis/scan/context.c b/plugins/pychrysalide/analysis/scan/context.c
index 8f29457..7071935 100644
--- a/plugins/pychrysalide/analysis/scan/context.c
+++ b/plugins/pychrysalide/analysis/scan/context.c
@@ -32,10 +32,11 @@
#include <analysis/content.h>
#include <analysis/scan/context-int.h>
#include <analysis/scan/expr.h>
-#include <plugins/pychrysalide/access.h>
-#include <plugins/pychrysalide/helpers.h>
-#include <plugins/pychrysalide/analysis/content.h>
-#include <plugins/pychrysalide/analysis/scan/expr.h>
+
+#include "expr.h"
+#include "../content.h"
+#include "../../access.h"
+#include "../../helpers.h"
@@ -50,6 +51,12 @@ static PyObject *py_scan_context_mark_scan_as_done(PyObject *, PyObject *);
/* Indique si une correspondance globale a pu être établie. */
static PyObject *py_scan_context_has_match_for_rule(PyObject *, PyObject *);
+/* Fournit une référence au contenu principal analysé. */
+static PyObject *py_scan_context_get_content(PyObject *, void *);
+
+/* Définit le contenu principal à analyser. */
+static int py_scan_context_set_content(PyObject *, PyObject *, void *);
+
/* Indique si la phase d'analyse de contenu est terminée. */
static PyObject *py_scan_context_is_scan_done(PyObject *, void *);
@@ -183,6 +190,79 @@ static PyObject *py_scan_context_has_match_for_rule(PyObject *self, PyObject *ar
/******************************************************************************
* *
+* Paramètres : self = classe représentant une routine binaire. *
+* closure = adresse non utilisée ici. *
+* *
+* Description : Fournit une référence au contenu principal analysé. *
+* *
+* Retour : Content binaire associé au context. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static PyObject *py_scan_context_get_content(PyObject *self, void *closure)
+{
+ PyObject *result; /* Eléments à retourner */
+ GScanContext *context; /* Version native */
+ GBinContent *content; /* Contenu binaire à référencer*/
+
+#define SCAN_CONTEXT_CONTENT_ATTRIB PYTHON_GETSET_DEF_FULL \
+( \
+ content, py_scan_context, \
+ "Link to the scanned binary content.\n" \
+ "\n" \
+ "The result is a pychrysalide.analysis.BinContent for" \
+ " fully initialized context." \
+)
+
+ context = G_SCAN_CONTEXT(pygobject_get(self));
+ content = g_scan_context_get_content(context);
+
+ result = pygobject_new(G_OBJECT(content));
+
+ g_object_unref(G_OBJECT(content));
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : self = objet Python concerné par l'appel. *
+* value = valeur fournie à intégrer ou prendre en compte. *
+* closure = non utilisé ici. *
+* *
+* Description : Définit le contenu principal à analyser. *
+* *
+* Retour : Content binaire associé au context. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static int py_scan_context_set_content(PyObject *self, PyObject *value, void *closure)
+{
+ GScanContext *context; /* Elément à consulter */
+ int ret; /* Bilan de lecture des args. */
+ GBinContent *content; /* Contenu binaire à référencer*/
+
+ ret = PyObject_IsInstance(value, (PyObject *)get_python_binary_content_type());
+ if (!ret) return -1;
+
+ context = G_SCAN_CONTEXT(pygobject_get(self));
+ content = G_BIN_CONTENT(pygobject_get(value));
+
+ g_scan_context_set_content(context, content);
+
+ return 0;
+
+}
+
+
+/******************************************************************************
+* *
* Paramètres : self = objet Python concerné par l'appel. *
* closure = non utilisé ici. *
* *
@@ -242,6 +322,7 @@ PyTypeObject *get_python_scan_context_type(void)
};
static PyGetSetDef py_scan_context_getseters[] = {
+ SCAN_CONTEXT_CONTENT_ATTRIB,
SCAN_CONTEXT_IS_SCAN_DONE_ATTRIB,
{ NULL }
};
diff --git a/plugins/pychrysalide/analysis/scan/expr.c b/plugins/pychrysalide/analysis/scan/expr.c
index 3622e9b..2d8245a 100644
--- a/plugins/pychrysalide/analysis/scan/expr.c
+++ b/plugins/pychrysalide/analysis/scan/expr.c
@@ -107,7 +107,7 @@ static int py_scan_expression_init(PyObject *self, PyObject *args, PyObject *kwd
" the following arguments as keyword parameters:\n" \
"* *state*: initial state of reduction for the expression, as a" \
" pychrysalide.analysis.scan.ScanExpression.ScanReductionState" \
- " value." \
+ " value." \
"\n" \
"The following methods have to be defined for new classes:\n" \
"* pychrysalide.analysis.scan.ScanExpression._cmp_rich().\n"
diff --git a/plugins/pychrysalide/analysis/scan/exprs/Makefile.am b/plugins/pychrysalide/analysis/scan/exprs/Makefile.am
new file mode 100644
index 0000000..e40d4de
--- /dev/null
+++ b/plugins/pychrysalide/analysis/scan/exprs/Makefile.am
@@ -0,0 +1,15 @@
+
+noinst_LTLIBRARIES = libpychrysaanalysisscanexprs.la
+
+libpychrysaanalysisscanexprs_la_SOURCES = \
+ constants.h constants.c \
+ literal.h literal.c \
+ module.h module.c
+
+libpychrysaanalysisscanexprs_la_CFLAGS = $(LIBPYTHON_INTERPRETER_CFLAGS) $(LIBPYGOBJECT_CFLAGS) \
+ $(TOOLKIT_CFLAGS) -I$(top_srcdir)/src -DNO_IMPORT_PYGOBJECT
+
+
+devdir = $(includedir)/chrysalide/$(subdir)
+
+dev_HEADERS = $(libpychrysaanalysisscanexprs_la_SOURCES:%c=)
diff --git a/plugins/pychrysalide/analysis/scan/exprs/constants.c b/plugins/pychrysalide/analysis/scan/exprs/constants.c
new file mode 100644
index 0000000..b11ac4c
--- /dev/null
+++ b/plugins/pychrysalide/analysis/scan/exprs/constants.c
@@ -0,0 +1,128 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * constants.c - ajout des constantes de base pour les expressions
+ *
+ * Copyright (C) 2023 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 <analysis/scan/exprs/literal.h>
+
+
+#include "../../../helpers.h"
+
+
+
+/******************************************************************************
+* *
+* Paramètres : type = type dont le dictionnaire est à compléter. *
+* *
+* Description : Définit les constantes relatives aux expressions de scan. *
+* *
+* Retour : true en cas de succès de l'opération, false sinon. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool define_literal_expression_value_type_constants(PyTypeObject *type)
+{
+ bool result; /* Bilan à retourner */
+ PyObject *values; /* Groupe de valeurs à établir */
+
+ values = PyDict_New();
+
+ result = add_const_to_group(values, "LVT_BOOLEAN", LVT_BOOLEAN);
+ if (result) result = add_const_to_group(values, "SIGNED_INTEGER", LVT_SIGNED_INTEGER);
+ if (result) result = add_const_to_group(values, "UNSIGNED_INTEGER", LVT_UNSIGNED_INTEGER);
+ if (result) result = add_const_to_group(values, "STRING", LVT_STRING);
+
+ if (!result)
+ {
+ Py_DECREF(values);
+ goto exit;
+ }
+
+ result = attach_constants_group_to_type(type, false, "LiteralValueType", values,
+ "Type of value carried by a literal scan expression.");
+
+ 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 LiteralValueType. *
+* *
+* Retour : Bilan de l'opération, voire indications supplémentaires. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+int convert_to_literal_expression_value_type(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 LiteralValueType");
+ break;
+
+ case 1:
+ value = PyLong_AsUnsignedLong(arg);
+
+ if (value > LVT_REG_EXPR)
+ {
+ PyErr_SetString(PyExc_TypeError, "invalid value for LiteralValueType");
+ result = 0;
+ }
+
+ else
+ *((LiteralValueType *)dst) = value;
+
+ break;
+
+ default:
+ assert(false);
+ break;
+
+ }
+
+ return result;
+
+}
diff --git a/plugins/pychrysalide/analysis/scan/exprs/constants.h b/plugins/pychrysalide/analysis/scan/exprs/constants.h
new file mode 100644
index 0000000..e5b8e8c
--- /dev/null
+++ b/plugins/pychrysalide/analysis/scan/exprs/constants.h
@@ -0,0 +1,42 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * constants.h - prototypes pour l'ajout des constantes de base pour les expressions
+ *
+ * Copyright (C) 2023 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_SCAN_EXPRS_CONSTANTS_H
+#define _PLUGINS_PYCHRYSALIDE_ANALYSIS_SCAN_EXPRS_CONSTANTS_H
+
+
+#include <Python.h>
+#include <stdbool.h>
+
+
+
+/* Définit les constantes relatives aux expressions litérales. */
+bool define_literal_expression_value_type_constants(PyTypeObject *);
+
+/* Tente de convertir en constante LiteralValueType. */
+int convert_to_literal_expression_value_type(PyObject *, void *);
+
+
+
+#endif /* _PLUGINS_PYCHRYSALIDE_ANALYSIS_SCAN_EXPRS_CONSTANTS_H */
diff --git a/plugins/pychrysalide/analysis/scan/exprs/literal.c b/plugins/pychrysalide/analysis/scan/exprs/literal.c
new file mode 100644
index 0000000..d7ae002
--- /dev/null
+++ b/plugins/pychrysalide/analysis/scan/exprs/literal.c
@@ -0,0 +1,281 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * literal.c - équivalent Python du fichier "analysis/scan/exprs/literal.c"
+ *
+ * Copyright (C) 2023 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 "literal.h"
+
+
+#include <pygobject.h>
+
+
+#include <i18n.h>
+#include <analysis/scan/exprs/literal-int.h>
+
+
+#include "constants.h"
+#include "../expr.h"
+#include "../../../access.h"
+#include "../../../helpers.h"
+
+
+
+CREATE_DYN_CONSTRUCTOR(scan_literal_expression, G_TYPE_SCAN_LITERAL_EXPRESSION);
+
+/* Initialise une instance sur la base du dérivé de GObject. */
+static int py_scan_literal_expression_init(PyObject *, PyObject *, PyObject *);
+
+
+
+/******************************************************************************
+* *
+* 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_scan_literal_expression_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+ PyObject *py_value; /* Valeur en version Python */
+ int ret; /* Bilan de lecture des args. */
+ LiteralValueType vtype; /* Valeur à porter */
+ bool arg_boolean; /* Argument natif booléen */
+ unsigned long long arg_uinteger; /* Argument natif entier */
+ sized_string_t arg_string; /* Argument natif textuel */
+ Py_ssize_t arg_str_length; /* Taille de ce texte */
+ void *arg_ptr; /* Pointeur vers un argument */
+ GScanLiteralExpression *expr; /* Création GLib à transmettre */
+
+#define SCAN_LITERAL_EXPRESSION_DOC \
+ "A ScanLiteralExpression object defines expression carrying" \
+ " literal values available for scan match conditions.\n" \
+ "\n" \
+ "Instances can be created using one of the following" \
+ " constructors:\n" \
+ "\n" \
+ " ScanLiteralExpression(value)" \
+ "\n" \
+ "\n" \
+ "Where *value* is either a boolean, an integer or bytes."
+
+ /* Récupération des paramètres */
+
+ ret = PyArg_ParseTuple(args, "O", &py_value);
+ if (!ret) return -1;
+
+ if (PyBool_Check(py_value))
+ {
+ vtype = LVT_BOOLEAN;
+
+ arg_boolean = (py_value == Py_True);
+ arg_ptr = &arg_boolean;
+
+ }
+
+ else if (PyLong_Check(py_value))
+ {
+ if (1 /* sign - TODO */)
+ ;
+
+ vtype = LVT_UNSIGNED_INTEGER;
+
+ arg_uinteger = PyLong_AsUnsignedLongLong(py_value);
+ arg_ptr = &arg_uinteger;
+
+ }
+
+ else if (PyBytes_Check(py_value))
+ {
+ vtype = LVT_STRING;
+
+ ret = PyBytes_AsStringAndSize(py_value, &arg_string.data, &arg_str_length);
+ if (ret == -1) return -1;
+
+ arg_string.len = arg_str_length;
+ arg_ptr = &arg_string;
+
+ }
+
+ else
+ {
+ PyErr_SetString(PyExc_ValueError, _("Unsupported Python value for a literal scan expression."));
+ return -1;
+ }
+
+ /* Initialisation d'un objet GLib */
+
+ ret = forward_pygobjet_init(self);
+ if (ret == -1) return -1;
+
+ /* Eléments de base */
+
+ expr = G_SCAN_LITERAL_EXPRESSION(pygobject_get(self));
+
+ if (!g_scan_literal_expression_create(expr, vtype, arg_ptr))
+ {
+ PyErr_SetString(PyExc_ValueError, _("Unable to create literal expression."));
+ return -1;
+ }
+
+ return 0;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : - *
+* *
+* Description : Fournit un accès à une définition de type à diffuser. *
+* *
+* Retour : Définition d'objet pour Python. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+PyTypeObject *get_python_scan_literal_expression_type(void)
+{
+ static PyMethodDef py_scan_literal_expression_methods[] = {
+ { NULL }
+ };
+
+ static PyGetSetDef py_scan_literal_expression_getseters[] = {
+ { NULL }
+ };
+
+ static PyTypeObject py_scan_literal_expression_type = {
+
+ PyVarObject_HEAD_INIT(NULL, 0)
+
+ .tp_name = "pychrysalide.analysis.scan.exprs.ScanLiteralExpression",
+ .tp_basicsize = sizeof(PyGObject),
+
+ .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+
+ .tp_doc = SCAN_LITERAL_EXPRESSION_DOC,
+
+ .tp_methods = py_scan_literal_expression_methods,
+ .tp_getset = py_scan_literal_expression_getseters,
+
+ .tp_init = py_scan_literal_expression_init,
+ .tp_new = py_scan_literal_expression_new,
+
+ };
+
+ return &py_scan_literal_expression_type;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : - *
+* *
+* Description : Prend en charge l'objet 'pychrysalide....PlainModifier'. *
+* *
+* Retour : Bilan de l'opération. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool ensure_python_scan_literal_expression_is_registered(void)
+{
+ PyTypeObject *type; /* Type Python 'PlainModifier' */
+ PyObject *module; /* Module à recompléter */
+ PyObject *dict; /* Dictionnaire du module */
+
+ type = get_python_scan_literal_expression_type();
+
+ if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
+ {
+ module = get_access_to_python_module("pychrysalide.analysis.scan.exprs");
+
+ dict = PyModule_GetDict(module);
+
+ if (!ensure_python_scan_expression_is_registered())
+ return false;
+
+ if (!register_class_for_pygobject(dict, G_TYPE_SCAN_LITERAL_EXPRESSION, type))
+ return false;
+
+ if (!define_literal_expression_value_type_constants(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 transmission d'octets à l'identique. *
+* *
+* Retour : Bilan de l'opération, voire indications supplémentaires. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+int convert_to_scan_literal_expression(PyObject *arg, void *dst)
+{
+ int result; /* Bilan à retourner */
+
+ result = PyObject_IsInstance(arg, (PyObject *)get_python_scan_literal_expression_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 scan literal expression");
+ break;
+
+ case 1:
+ *((GScanLiteralExpression **)dst) = G_SCAN_LITERAL_EXPRESSION(pygobject_get(arg));
+ break;
+
+ default:
+ assert(false);
+ break;
+
+ }
+
+ return result;
+
+}
diff --git a/plugins/pychrysalide/analysis/scan/exprs/literal.h b/plugins/pychrysalide/analysis/scan/exprs/literal.h
new file mode 100644
index 0000000..8e7ea70
--- /dev/null
+++ b/plugins/pychrysalide/analysis/scan/exprs/literal.h
@@ -0,0 +1,45 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * literal.h - équivalent Python du fichier "analysis/scan/exprs/literal.h"
+ *
+ * Copyright (C) 2023 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_SCAN_EXPRS_LITERAL_H
+#define _PLUGINS_PYCHRYSALIDE_ANALYSIS_SCAN_EXPRS_LITERAL_H
+
+
+#include <Python.h>
+#include <stdbool.h>
+
+
+
+/* Fournit un accès à une définition de type à diffuser. */
+PyTypeObject *get_python_scan_literal_expression_type(void);
+
+/* Prend en charge l'objet 'pychrysalide.analysis.scan.exprs.ScanLiteralExpression'. */
+bool ensure_python_scan_literal_expression_is_registered(void);
+
+/* Tente de convertir en transmission d'octets à l'identique. */
+int convert_to_scan_literal_expression(PyObject *, void *);
+
+
+
+#endif /* _PLUGINS_PYCHRYSALIDE_ANALYSIS_SCAN_EXPRS_LITERAL_H */
diff --git a/plugins/pychrysalide/analysis/scan/exprs/module.c b/plugins/pychrysalide/analysis/scan/exprs/module.c
new file mode 100644
index 0000000..4f38430
--- /dev/null
+++ b/plugins/pychrysalide/analysis/scan/exprs/module.c
@@ -0,0 +1,103 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * module.c - intégration du répertoire exprs en tant que module
+ *
+ * Copyright (C) 2023 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 "module.h"
+
+
+#include <assert.h>
+
+
+#include "literal.h"
+#include "../../../helpers.h"
+
+
+
+/******************************************************************************
+* *
+* Paramètres : super = module dont la définition est à compléter. *
+* *
+* Description : Ajoute le module 'analysis....modifiers' à un module Python. *
+* *
+* Retour : Bilan de l'opération. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool add_analysis_scan_exprs_module(PyObject *super)
+{
+ bool result; /* Bilan à retourner */
+ PyObject *module; /* Sous-module mis en place */
+
+#define PYCHRYSALIDE_ANALYSIS_SCAN_EXPRS_MODULE_DOC \
+ "This module provide expressions used to build a match condition."
+
+ static PyModuleDef py_chrysalide_analysis_scan_exprs_module = {
+
+ .m_base = PyModuleDef_HEAD_INIT,
+
+ .m_name = "pychrysalide.analysis.scan.exprs",
+ .m_doc = PYCHRYSALIDE_ANALYSIS_SCAN_EXPRS_MODULE_DOC,
+
+ .m_size = -1,
+
+ };
+
+ module = build_python_module(super, &py_chrysalide_analysis_scan_exprs_module);
+
+ result = (module != NULL);
+
+ if (!result)
+ Py_XDECREF(module);
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : - *
+* *
+* Description : Intègre les objets du module 'analysis...patterns.modifiers'.*
+* *
+* Retour : Bilan de l'opération. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool populate_analysis_scan_exprs_module(void)
+{
+ bool result; /* Bilan à retourner */
+
+ result = true;
+
+ if (result) result = ensure_python_scan_literal_expression_is_registered();
+
+ assert(result);
+
+ return result;
+
+}
diff --git a/plugins/pychrysalide/analysis/scan/exprs/module.h b/plugins/pychrysalide/analysis/scan/exprs/module.h
new file mode 100644
index 0000000..ee4b8ab
--- /dev/null
+++ b/plugins/pychrysalide/analysis/scan/exprs/module.h
@@ -0,0 +1,42 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * module.h - prototypes pour l'intégration du répertoire exprs en tant que module
+ *
+ * Copyright (C) 2023 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_SCAN_EXPRS_MODULE_H
+#define _PLUGINS_PYCHRYSALIDE_ANALYSIS_SCAN_EXPRS_MODULE_H
+
+
+#include <Python.h>
+#include <stdbool.h>
+
+
+
+/* Ajoute le module 'analysis.scan.exprs' à un module Python. */
+bool add_analysis_scan_exprs_module(PyObject *);
+
+/* Intègre les objets du module 'analysis.scan.exprs'. */
+bool populate_analysis_scan_exprs_module(void);
+
+
+
+#endif /* _PLUGINS_PYCHRYSALIDE_ANALYSIS_SCAN_EXPRS_MODULE_H */
diff --git a/plugins/pychrysalide/analysis/scan/item.c b/plugins/pychrysalide/analysis/scan/item.c
index 959694e..3f46067 100644
--- a/plugins/pychrysalide/analysis/scan/item.c
+++ b/plugins/pychrysalide/analysis/scan/item.c
@@ -38,14 +38,68 @@
-CREATE_DYN_CONSTRUCTOR(registered_item, G_TYPE_REGISTERED_ITEM);
+/* ------------------------ GLUE POUR CREATION DEPUIS PYTHON ------------------------ */
+
+
+/* Initialise la classe des éléments appelables enregistrés. */
+static void py_registered_item_init_gclass(GRegisteredItemClass *, gpointer);
+
+CREATE_DYN_ABSTRACT_CONSTRUCTOR(registered_item, G_TYPE_REGISTERED_ITEM, py_registered_item_init_gclass);
/* Initialise une instance sur la base du dérivé de GObject. */
static int py_registered_item_init(PyObject *, PyObject *, PyObject *);
+/* Indique le nom associé à une expression d'évaluation. */
+static char *py_registered_item_get_name_wrapper(const GRegisteredItem *);
+
+/* Lance une résolution d'élément à solliciter. */
+static bool py_registered_item_resolve_wrapper(GRegisteredItem *, const char *, GScanContext *, GScanScope *, GRegisteredItem **);
+
+/* Réduit une expression à une forme plus simple. */
+static bool py_registered_item_reduce_wrapper(GRegisteredItem *, GScanContext *, GScanScope *, GScanExpression **);
+
+/* Effectue un appel à une fonction enregistrée. */
+static bool py_registered_item_run_call_wrapper(GRegisteredItem *, GScanExpression **, size_t, GScanContext *, GScanScope *, GObject **);
+
+
+
+/* ------------------------- CONNEXION AVEC L'API DE PYTHON ------------------------- */
+
+
/* Lance une résolution d'élément à appeler. */
static PyObject *py_registered_item_resolve(PyObject *, PyObject *);
+/* Fournit le désignation associée à un composant nommé. */
+static PyObject *py_registered_item_get_name(PyObject *, void *);
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/* GLUE POUR CREATION DEPUIS PYTHON */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+* *
+* Paramètres : class = classe à initialiser. *
+* unused = données non utilisées ici. *
+* *
+* Description : Initialise la classe des éléments appelables enregistrés. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void py_registered_item_init_gclass(GRegisteredItemClass *class, gpointer unused)
+{
+ class->get_name = py_registered_item_get_name_wrapper;
+ class->resolve = py_registered_item_resolve_wrapper;
+ class->reduce = py_registered_item_reduce_wrapper;
+ class->run_call = py_registered_item_run_call_wrapper;
+
+}
/******************************************************************************
@@ -66,13 +120,22 @@ static int py_registered_item_init(PyObject *self, PyObject *args, PyObject *kwd
{
int ret; /* Bilan de lecture des args. */
-#define REGISTERED_ITEM_DOC \
- "The *RegisteredItem* class defines the basics for evaluation" \
- " items involved into content scanning.\n" \
+#define REGISTERED_ITEM_DOC \
+ "The *RegisteredItem* class is an abstract definition which is" \
+ " the base for all keywords involved in a match condition" \
+ " expression.\n" \
+ "\n" \
+ "Calls to the *__init__* constructor of this abstract object" \
+ " expect no particular argument.\n" \
"\n" \
- "Instances can be created using the following constructor:\n" \
+ "The following methods have to be defined for new classes:\n" \
+ "* pychrysalide.analysis.scan.RegisteredItem._resolve();\n" \
+ "* pychrysalide.analysis.scan.RegisteredItem._reduce();\n" \
+ "* pychrysalide.analysis.scan.RegisteredItem._call().\n" \
"\n" \
- " RegisteredItem()"
+ "One item has to be defined as class attributes in the final" \
+ " class:\n" \
+ "* pychrysalide.analysis.scan.RegisteredItem._name.\n"
/* Initialisation d'un objet GLib */
@@ -86,6 +149,338 @@ static int py_registered_item_init(PyObject *self, PyObject *args, PyObject *kwd
/******************************************************************************
* *
+* Paramètres : item = élément d'appel à consulter. *
+* *
+* Description : Indique le nom associé à une expression d'évaluation. *
+* *
+* Retour : Désignation humaine de l'expression d'évaluation. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static char *py_registered_item_get_name_wrapper(const GRegisteredItem *item)
+{
+ char *result; /* Désignation à retourner */
+ PyGILState_STATE gstate; /* Sauvegarde d'environnement */
+ PyObject *pyobj; /* Objet Python concerné */
+ PyObject *pyname; /* Nom en objet Python */
+ int ret; /* Bilan d'une conversion */
+
+#define REGISTERED_ITEM_NAME_ATTRIB_WRAPPER PYTHON_GETTER_WRAPPER_DEF \
+( \
+ _name, \
+ "Provide the keyword of the expression item to be evaluated.\n" \
+ "\n" \
+ "The result has to be a string." \
+)
+
+ result = NULL;
+
+ gstate = PyGILState_Ensure();
+
+ pyobj = pygobject_new(G_OBJECT(item));
+
+ if (PyObject_HasAttrString(pyobj, "_name"))
+ {
+ pyname = PyObject_GetAttrString(pyobj, "_name");
+
+ if (pyname != NULL)
+ {
+ ret = PyUnicode_Check(pyname);
+
+ if (ret)
+ result = strdup(PyUnicode_AsUTF8(pyname));
+
+ Py_DECREF(pyname);
+
+ }
+
+ }
+
+ Py_DECREF(pyobj);
+
+ PyGILState_Release(gstate);
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : item = élément d'appel à consulter. *
+* target = désignation de l'objet d'appel à identifier. *
+* ctx = contexte de suivi de l'analyse courante. *
+* scope = portée courante des variables locales. *
+* out = zone d'enregistrement de la résolution opérée. [OUT]*
+* *
+* Description : Lance une résolution d'élément à solliciter. *
+* *
+* Retour : Bilan de l'opération : false en cas d'erreur irrécupérable. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static bool py_registered_item_resolve_wrapper(GRegisteredItem *item, const char *target, GScanContext *ctx, GScanScope *scope, GRegisteredItem **out)
+{
+ bool result; /* Bilan à retourner */
+ PyGILState_STATE gstate; /* Sauvegarde d'environnement */
+ PyObject *pyobj; /* Objet Python concerné */
+ PyObject *args; /* Arguments pour l'appel */
+ PyObject *pyret; /* Bilan de consultation */
+ GObject *gobj_ret; /* Bilan natif de consultation */
+
+#define REGISTERED_ITEM_RESOLVE_WRAPPER PYTHON_WRAPPER_DEF \
+( \
+ _cmp_rich, "$self, target, ctx, scope, /", \
+ METH_VARARGS, \
+ "Abstract method used to resolve an item by name.\n" \
+ "\n" \
+ "The *target* argument provide the name of the searched item;" \
+ " *ctx* is a pychrysalide.analysis.scan.ScanContext instance" \
+ " providing information about the current state; *scope* is a" \
+ " pychrysalide.analysis.scan.ScanScope offering a view on the" \
+ " current namespace for variables.\n" \
+ "\n" \
+ "The result has to be a pychrysalide.analysis.scan.RegisteredItem" \
+ " instance on success, or *None* in case of failure." \
+)
+
+ result = false;
+
+ gstate = PyGILState_Ensure();
+
+ pyobj = pygobject_new(G_OBJECT(item));
+
+ if (has_python_method(pyobj, "_resolve"))
+ {
+ args = PyTuple_New(3);
+ PyTuple_SetItem(args, 0, PyUnicode_FromString(target));
+ PyTuple_SetItem(args, 1, pygobject_new(G_OBJECT(ctx)));
+ PyTuple_SetItem(args, 2, pygobject_new(G_OBJECT(scope)));
+
+ pyret = run_python_method(pyobj, "_resolve", args);
+
+ if (pyret != NULL)
+ {
+ gobj_ret = pygobject_get(pyret);
+
+ if (G_IS_REGISTERED_ITEM(gobj_ret))
+ {
+ *out = G_REGISTERED_ITEM(gobj_ret);
+
+ g_object_ref(G_OBJECT(*out));
+ result = true;
+
+ }
+
+ Py_DECREF(pyret);
+
+ }
+
+ Py_DECREF(args);
+
+ }
+
+ Py_DECREF(pyobj);
+
+ PyGILState_Release(gstate);
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : item = élément d'appel à consulter. *
+* ctx = contexte de suivi de l'analyse courante. *
+* scope = portée courante des variables locales. *
+* out = zone d'enregistrement de la réduction opérée. [OUT] *
+* *
+* Description : Réduit une expression à une forme plus simple. *
+* *
+* Retour : Bilan de l'opération : false en cas d'erreur irrécupérable. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static bool py_registered_item_reduce_wrapper(GRegisteredItem *item, GScanContext *ctx, GScanScope *scope, GScanExpression **out)
+{
+ bool result; /* Bilan à retourner */
+ PyGILState_STATE gstate; /* Sauvegarde d'environnement */
+ PyObject *pyobj; /* Objet Python concerné */
+ PyObject *args; /* Arguments pour l'appel */
+ PyObject *pyret; /* Bilan de consultation */
+ GObject *gobj_ret; /* Bilan natif de consultation */
+
+#define REGISTERED_ITEM_REDUCE_WRAPPER PYTHON_WRAPPER_DEF \
+( \
+ _cmp_rich, "$self, ctx, scope, /", \
+ METH_VARARGS, \
+ "Abstract method used to replace the item by an equivalent reduced" \
+ " value.\n" \
+ "\n" \
+ "The *ctx* argument is a pychrysalide.analysis.scan.ScanContext" \
+ " instance providing information about the current state; *scope*" \
+ " is a pychrysalide.analysis.scan.ScanScope offering a view on the" \
+ " current namespace for variables.\n" \
+ "\n" \
+ "The result has to be a pychrysalide.analysis.scan.ScanExpression" \
+ " instance on success, or *None* in case of failure." \
+)
+
+ result = false;
+
+ gstate = PyGILState_Ensure();
+
+ pyobj = pygobject_new(G_OBJECT(item));
+
+ if (has_python_method(pyobj, "_reduce"))
+ {
+ args = PyTuple_New(2);
+ PyTuple_SetItem(args, 0, pygobject_new(G_OBJECT(ctx)));
+ PyTuple_SetItem(args, 1, pygobject_new(G_OBJECT(scope)));
+
+ pyret = run_python_method(pyobj, "_reduce", args);
+
+ if (pyret != NULL)
+ {
+ gobj_ret = pygobject_get(pyret);
+
+ if (G_IS_SCAN_EXPRESSION(gobj_ret))
+ {
+ *out = G_SCAN_EXPRESSION(gobj_ret);
+
+ g_object_ref(G_OBJECT(*out));
+ result = true;
+
+ }
+
+ Py_DECREF(pyret);
+
+ }
+
+ Py_DECREF(args);
+
+ }
+
+ Py_DECREF(pyobj);
+
+ PyGILState_Release(gstate);
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : item = élément d'appel à consulter. *
+* args = liste d'éventuels arguments fournis. *
+* count = taille de cette liste. *
+* ctx = contexte de suivi de l'analyse courante. *
+* scope = portée courante des variables locales. *
+* out = zone d'enregistrement de la résolution opérée. [OUT] *
+* *
+* Description : Effectue un appel à une fonction enregistrée. *
+* *
+* Retour : Bilan de l'opération : false en cas d'erreur irrécupérable. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static bool py_registered_item_run_call_wrapper(GRegisteredItem *item, GScanExpression **args, size_t count, GScanContext *ctx, GScanScope *scope, GObject **out)
+{
+ bool result; /* Bilan à retourner */
+ PyGILState_STATE gstate; /* Sauvegarde d'environnement */
+ PyObject *pyobj; /* Objet Python concerné */
+ PyObject *sub_args; /* Sous-arguments pour l'appel */
+ size_t i; /* Boucle de parcours */
+ PyObject *py_args; /* Arguments pour l'appel */
+ PyObject *pyret; /* Bilan de consultation */
+ GObject *gobj_ret; /* Bilan natif de consultation */
+
+#define REGISTERED_ITEM_CALL_WRAPPER PYTHON_WRAPPER_DEF \
+( \
+ _cmp_rich, "$self, args, ctx, scope, /", \
+ METH_VARARGS, \
+ "Abstract method used to replace the item and its arguments by an" \
+ " equivalent reduced value.\n" \
+ "\n" \
+ "The *args* argument is a tuple of already reduced" \
+ " pychrysalide.analysis.scan.ScanExpression objects; ctx* argument" \
+ " is a pychrysalide.analysis.scan.ScanContext instance providing" \
+ " information about the current state; *scope* is a" \
+ " pychrysalide.analysis.scan.ScanScope offering a view on the" \
+ " current namespace for variables.\n" \
+ "\n" \
+ "The result has to be a pychrysalide.analysis.scan.ScanExpression" \
+ " instance on success, or *None* in case of failure." \
+)
+
+ result = false;
+
+ gstate = PyGILState_Ensure();
+
+ pyobj = pygobject_new(G_OBJECT(item));
+
+ if (has_python_method(pyobj, "_call"))
+ {
+ sub_args = PyTuple_New(count);
+
+ for (i = 0; i < count; i++)
+ PyTuple_SetItem(sub_args, 1, pygobject_new(G_OBJECT(args[i])));
+
+ py_args = PyTuple_New(3);
+ PyTuple_SetItem(py_args, 0, sub_args);
+ PyTuple_SetItem(py_args, 1, pygobject_new(G_OBJECT(ctx)));
+ PyTuple_SetItem(py_args, 2, pygobject_new(G_OBJECT(scope)));
+
+ pyret = run_python_method(pyobj, "_call", py_args);
+
+ if (pyret != NULL)
+ {
+ gobj_ret = pygobject_get(pyret);
+
+ if (G_IS_OBJECT(gobj_ret))
+ {
+ *out = gobj_ret;
+
+ g_object_ref(G_OBJECT(*out));
+ result = true;
+
+ }
+
+ Py_DECREF(pyret);
+
+ }
+
+ Py_DECREF(py_args);
+
+ }
+
+ Py_DECREF(pyobj);
+
+ PyGILState_Release(gstate);
+
+ return result;
+
+}
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/* CONNEXION AVEC L'API DE PYTHON */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+* *
* Paramètres : self = élément d'appel à consulter. *
* args = arguments fournis pour l'opération. *
* *
@@ -227,11 +622,15 @@ static PyObject *py_registered_item_get_name(PyObject *self, void *closure)
PyTypeObject *get_python_registered_item_type(void)
{
static PyMethodDef py_registered_item_methods[] = {
+ REGISTERED_ITEM_RESOLVE_WRAPPER,
+ REGISTERED_ITEM_REDUCE_WRAPPER,
+ REGISTERED_ITEM_CALL_WRAPPER,
REGISTERED_ITEM_RESOLVE_METHOD,
{ NULL }
};
static PyGetSetDef py_registered_item_getseters[] = {
+ REGISTERED_ITEM_NAME_ATTRIB_WRAPPER,
REGISTERED_ITEM_NAME_ATTRIB,
{ NULL }
};
@@ -243,7 +642,7 @@ PyTypeObject *get_python_registered_item_type(void)
.tp_name = "pychrysalide.analysis.scan.RegisteredItem",
.tp_basicsize = sizeof(PyGObject),
- .tp_flags = Py_TPFLAGS_DEFAULT,
+ .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IS_ABSTRACT | Py_TPFLAGS_BASETYPE,
.tp_doc = REGISTERED_ITEM_DOC,
diff --git a/plugins/pychrysalide/analysis/scan/module.c b/plugins/pychrysalide/analysis/scan/module.c
index ff19d92..2c5b1ef 100644
--- a/plugins/pychrysalide/analysis/scan/module.c
+++ b/plugins/pychrysalide/analysis/scan/module.c
@@ -35,6 +35,7 @@
#include "options.h"
#include "scanner.h"
#include "space.h"
+#include "exprs/module.h"
#include "patterns/module.h"
#include "../../helpers.h"
@@ -76,6 +77,7 @@ bool add_analysis_scan_module(PyObject *super)
result = (module != NULL);
+ if (result) result = add_analysis_scan_exprs_module(module);
if (result) result = add_analysis_scan_patterns_module(module);
if (!result)
@@ -113,6 +115,7 @@ bool populate_analysis_scan_module(void)
if (result) result = populate_scan_module_with_core_methods();
+ if (result) result = populate_analysis_scan_exprs_module();
if (result) result = populate_analysis_scan_patterns_module();
assert(result);