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-rw-r--r--src/analysis/scan/items/math/Makefile.am13
-rw-r--r--src/analysis/scan/items/math/to_string.c381
-rw-r--r--src/analysis/scan/items/math/to_string.h58
3 files changed, 452 insertions, 0 deletions
diff --git a/src/analysis/scan/items/math/Makefile.am b/src/analysis/scan/items/math/Makefile.am
new file mode 100644
index 0000000..1f37c72
--- /dev/null
+++ b/src/analysis/scan/items/math/Makefile.am
@@ -0,0 +1,13 @@
+
+noinst_LTLIBRARIES = libanalysisscanitemsmath.la
+
+
+libanalysisscanitemsmath_la_SOURCES = \
+ to_string.h to_string.c
+
+libanalysisscanitemsmath_la_CFLAGS = $(LIBGOBJ_CFLAGS)
+
+
+devdir = $(includedir)/chrysalide/$(subdir:src/%=core/%)
+
+dev_HEADERS = $(libanalysisscanitemsmath_la_SOURCES:%c=)
diff --git a/src/analysis/scan/items/math/to_string.c b/src/analysis/scan/items/math/to_string.c
new file mode 100644
index 0000000..4bb8363
--- /dev/null
+++ b/src/analysis/scan/items/math/to_string.c
@@ -0,0 +1,381 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * to_string.c - conversion d'une valeur entière en chaîne
+ *
+ * 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "to_string.h"
+
+
+#include <assert.h>
+#include <stdlib.h>
+
+
+#include "../../item-int.h"
+#include "../../exprs/literal.h"
+
+
+
+/* ---------------------- INTRODUCTION D'UNE NOUVELLE FONCTION ---------------------- */
+
+
+/* Initialise la classe des conversions de texte en entier. */
+static void g_scan_math_to_string_function_class_init(GScanMathToStringFunctionClass *);
+
+/* Initialise une instance de conversion de texte en entier. */
+static void g_scan_math_to_string_function_init(GScanMathToStringFunction *);
+
+/* Supprime toutes les références externes. */
+static void g_scan_math_to_string_function_dispose(GScanMathToStringFunction *);
+
+/* Procède à la libération totale de la mémoire. */
+static void g_scan_math_to_string_function_finalize(GScanMathToStringFunction *);
+
+
+
+/* --------------------- IMPLEMENTATION DES FONCTIONS DE CLASSE --------------------- */
+
+
+/* Indique le nom associé à une expression d'évaluation. */
+static char *g_scan_math_to_string_function_get_name(const GScanMathToStringFunction *);
+
+/* Réalise la conversion d'une valeur en texte. */
+static void convert_integer_to_string(unsigned long long, unsigned long long, char **);
+
+/* Réduit une expression à une forme plus simple. */
+static bool g_scan_math_to_string_function_run_call(GScanMathToStringFunction *, GScanExpression **, size_t, GScanContext *, GScanScope *, GObject **);
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/* INTRODUCTION D'UNE NOUVELLE FONCTION */
+/* ---------------------------------------------------------------------------------- */
+
+
+/* Indique le type défini pour une conversion d'entier en texte. */
+G_DEFINE_TYPE(GScanMathToStringFunction, g_scan_math_to_string_function, G_TYPE_REGISTERED_ITEM);
+
+
+/******************************************************************************
+* *
+* Paramètres : klass = classe à initialiser. *
+* *
+* Description : Initialise la classe des conversions de texte en entier. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_math_to_string_function_class_init(GScanMathToStringFunctionClass *klass)
+{
+ GObjectClass *object; /* Autre version de la classe */
+ GRegisteredItemClass *registered; /* Version de classe parente */
+
+ object = G_OBJECT_CLASS(klass);
+
+ object->dispose = (GObjectFinalizeFunc/* ! */)g_scan_math_to_string_function_dispose;
+ object->finalize = (GObjectFinalizeFunc)g_scan_math_to_string_function_finalize;
+
+ registered = G_REGISTERED_ITEM_CLASS(klass);
+
+ registered->get_name = (get_registered_item_name_fc)g_scan_math_to_string_function_get_name;
+ registered->run_call = (run_registered_item_call_fc)g_scan_math_to_string_function_run_call;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : func = instance à initialiser. *
+* *
+* Description : Initialise une instance de conversion de texte en entier. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_math_to_string_function_init(GScanMathToStringFunction *func)
+{
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : func = instance d'objet GLib à traiter. *
+* *
+* Description : Supprime toutes les références externes. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_math_to_string_function_dispose(GScanMathToStringFunction *func)
+{
+ G_OBJECT_CLASS(g_scan_math_to_string_function_parent_class)->dispose(G_OBJECT(func));
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : func = instance d'objet GLib à traiter. *
+* *
+* Description : Procède à la libération totale de la mémoire. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_math_to_string_function_finalize(GScanMathToStringFunction *func)
+{
+ G_OBJECT_CLASS(g_scan_math_to_string_function_parent_class)->finalize(G_OBJECT(func));
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : - *
+* *
+* Description : Crée une fonction de conversion de valeur entière en texte. *
+* *
+* Retour : Fonction mise en place. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GRegisteredItem *g_scan_math_to_string_function_new(void)
+{
+ GRegisteredItem *result; /* Structure à retourner */
+
+ result = g_object_new(G_TYPE_SCAN_MATH_TO_STRING_FUNCTION, NULL);
+
+ return result;
+
+}
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/* IMPLEMENTATION DES FONCTIONS DE CLASSE */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+* *
+* 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 *g_scan_math_to_string_function_get_name(const GScanMathToStringFunction *item)
+{
+ char *result; /* Désignation à retourner */
+
+ result = strdup("to_string");
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : val = valeur entière à traiter. *
+* base = base à considérer. *
+* data = tête d'écriture à faire évoluer. [OUT] *
+* *
+* Description : Réalise la conversion d'une valeur en texte. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void convert_integer_to_string(unsigned long long val, unsigned long long base, char **data)
+{
+ static const char digits[16] = "0123456789abcdef";
+
+ if (val < base)
+ *((*data)++) = digits[val];
+
+ else
+ {
+ convert_integer_to_string(val / base, base, data);
+
+ *((*data)++) = digits[val % base];
+
+ }
+
+}
+
+
+/******************************************************************************
+* *
+* 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 : Réduit une expression à une forme plus simple. *
+* *
+* Retour : Réduction correspondante, expression déjà réduite, ou NULL. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static bool g_scan_math_to_string_function_run_call(GScanMathToStringFunction *item, GScanExpression **args, size_t count, GScanContext *ctx, GScanScope *scope, GObject **out)
+{
+ bool result; /* Bilan à retourner */
+ GScanLiteralExpression *literal; /* Version plus accessible */
+ LiteralValueType vtype; /* Type de valeur portée */
+ long long sval; /* Valeur signée obtenue */
+ unsigned long long uval; /* Valeur non signée obtenue */
+ bool negative; /* Besoin de signe en préfixe ?*/
+ unsigned long long base; /* Base de conversion */
+ char *data; /* Chaîne "C" à constituer */
+ char *iter; /* Tête d'écriture */
+ sized_string_t string; /* Chaîne finale complète */
+
+ /* Validation des arguments */
+
+ result = (count == 1 || count == 2);
+ if (!result) goto exit;
+
+ result = G_IS_SCAN_LITERAL_EXPRESSION(args[0]);
+ if (!result) goto exit;
+
+ literal = G_SCAN_LITERAL_EXPRESSION(args[0]);
+
+ vtype = g_scan_literal_expression_get_value_type(literal);
+
+ result = (vtype == LVT_SIGNED_INTEGER || vtype == LVT_UNSIGNED_INTEGER);
+ if (!result) goto exit;
+
+ if (vtype == LVT_SIGNED_INTEGER)
+ {
+ result = g_scan_literal_expression_get_signed_integer_value(literal, &sval);
+ if (!result) goto exit;
+
+ assert(sval < 0);
+
+ negative = (sval < 0);
+
+ if (negative)
+ uval = -sval;
+
+ }
+ else
+ {
+ result = g_scan_literal_expression_get_unsigned_integer_value(literal, &uval);
+ if (!result) goto exit;
+ }
+
+ if (count == 1)
+ base = 10;
+
+ else
+ {
+ result = G_IS_SCAN_LITERAL_EXPRESSION(args[1]);
+ if (!result) goto exit;
+
+ literal = G_SCAN_LITERAL_EXPRESSION(args[1]);
+
+ vtype = g_scan_literal_expression_get_value_type(literal);
+
+ result = (vtype == LVT_UNSIGNED_INTEGER);
+ if (!result) goto exit;
+
+ result = g_scan_literal_expression_get_unsigned_integer_value(literal, &base);
+ if (!result) goto exit;
+
+ result = (base == 2 || base == 8 || base == 10 || base == 16);
+ if (!result) goto exit;
+
+ }
+
+ /* Réalisation de l'opération attendue */
+
+ data = malloc((1 + 2 + 64 * 8 + 1) * sizeof(char));
+ iter = data;
+
+ if (negative)
+ *(iter++) = '-';
+
+ switch (base)
+ {
+ case 2:
+ *(iter++) = '0';
+ *(iter++) = 'b';
+ break;
+
+ case 8:
+ *(iter++) = '0';
+ break;
+
+ case 10:
+ break;
+
+ case 16:
+ *(iter++) = '0';
+ *(iter++) = 'x';
+ break;
+
+ default:
+ assert(false);
+ break;
+
+ }
+
+ convert_integer_to_string(uval, base, &iter);
+
+ string.data = data;
+ string.len = iter - data;
+
+ *out = G_OBJECT(g_scan_literal_expression_new(LVT_STRING, &string));
+
+ free(data);
+
+ result = true;
+
+ exit:
+
+ return result;
+
+}
diff --git a/src/analysis/scan/items/math/to_string.h b/src/analysis/scan/items/math/to_string.h
new file mode 100644
index 0000000..19f0020
--- /dev/null
+++ b/src/analysis/scan/items/math/to_string.h
@@ -0,0 +1,58 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * to_string.h - prototypes pour la conversion d'une valeur entière en chaîne
+ *
+ * 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef _ANALYSIS_SCAN_ITEMS_MATH_TO_STRING_H
+#define _ANALYSIS_SCAN_ITEMS_MATH_TO_STRING_H
+
+
+#include <glib-object.h>
+
+
+#include "../../item.h"
+
+
+
+#define G_TYPE_SCAN_MATH_TO_STRING_FUNCTION g_scan_math_to_string_function_get_type()
+#define G_SCAN_MATH_TO_STRING_FUNCTION(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), G_TYPE_SCAN_MATH_TO_STRING_FUNCTION, GScanMathToStringFunction))
+#define G_IS_SCAN_MATH_TO_STRING_FUNCTION(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), G_TYPE_SCAN_MATH_TO_STRING_FUNCTION))
+#define G_SCAN_MATH_TO_STRING_FUNCTION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_SCAN_MATH_TO_STRING_FUNCTION, GScanMathToStringFunctionClass))
+#define G_IS_SCAN_MATH_TO_STRING_FUNCTION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_SCAN_MATH_TO_STRING_FUNCTION))
+#define G_SCAN_MATH_TO_STRING_FUNCTION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_SCAN_MATH_TO_STRING_FUNCTION, GScanMathToStringFunctionClass))
+
+
+/* Conversion d'une valeur entière en valeur textuelle (instance) */
+typedef GRegisteredItem GScanMathToStringFunction;
+
+/* Conversion d'une valeur entière en valeur textuelle (classe) */
+typedef GRegisteredItemClass GScanMathToStringFunctionClass;
+
+
+/* Indique le type défini pour une conversion d'entier en texte. */
+GType g_scan_math_to_string_function_get_type(void);
+
+/* Crée une fonction de conversion de valeur entière en texte. */
+GRegisteredItem *g_scan_math_to_string_function_new(void);
+
+
+
+#endif /* _ANALYSIS_SCAN_ITEMS_MATH_TO_STRING_H */
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