summaryrefslogtreecommitdiff
path: root/src/analysis/scan
diff options
context:
space:
mode:
Diffstat (limited to 'src/analysis/scan')
-rw-r--r--src/analysis/scan/Makefile.am2
-rw-r--r--src/analysis/scan/context.c16
-rw-r--r--src/analysis/scan/exprs/access.c17
-rw-r--r--src/analysis/scan/scope-int.h54
-rw-r--r--src/analysis/scan/scope.c209
-rw-r--r--src/analysis/scan/scope.h24
6 files changed, 314 insertions, 8 deletions
diff --git a/src/analysis/scan/Makefile.am b/src/analysis/scan/Makefile.am
index d4d7aa4..d24f4a8 100644
--- a/src/analysis/scan/Makefile.am
+++ b/src/analysis/scan/Makefile.am
@@ -36,6 +36,8 @@ libanalysisscan_la_SOURCES = \
rule.h rule.c \
scanner-int.h \
scanner.h scanner.c \
+ scope-int.h \
+ scope.h scope.c \
space-int.h \
space.h space.c \
tokens.l \
diff --git a/src/analysis/scan/context.c b/src/analysis/scan/context.c
index 1f9c38e..f108e93 100644
--- a/src/analysis/scan/context.c
+++ b/src/analysis/scan/context.c
@@ -763,7 +763,9 @@ bool g_scan_context_has_match_for_rule(GScanContext *context, const char *name)
bool result; /* Bilan à retourner */
size_t i; /* Boucle de parcours */
rule_condition_t *cond; /* Condition à considérer */
+ GScanScope *scope; /* Définition de portées */
GScanExpression *new; /* Nouvelle expression réduite */
+ ScanReductionState state; /* Statut d'une réduction */
bool valid; /* Validité d'une récupération */
result = false;
@@ -786,20 +788,26 @@ bool g_scan_context_has_match_for_rule(GScanContext *context, const char *name)
if (!cond->final_reduced)
{
- valid = g_scan_expression_reduce(cond->expr, context, NULL, &new);
- if (!valid || new == NULL) goto exit;
+ scope = g_scan_scope_new(name);
+
+ state = g_scan_expression_reduce(cond->expr, context, scope, &new);
+ if (state == SRS_UNRESOLVABLE) goto exit_reduction;
g_object_unref(G_OBJECT(cond->expr));
cond->expr = new;
- valid = g_scan_expression_reduce_to_boolean(cond->expr, context, NULL, &new);
- if (!valid || new == NULL) goto exit;
+ valid = g_scan_expression_reduce_to_boolean(cond->expr, context, scope, &new);
+ if (!valid || new == NULL) goto exit_reduction;
g_object_unref(G_OBJECT(cond->expr));
cond->expr = new;
cond->final_reduced = true;
+ exit_reduction:
+
+ g_object_unref(G_OBJECT(scope));
+
}
/* Tentative de récupération d'un bilan final */
diff --git a/src/analysis/scan/exprs/access.c b/src/analysis/scan/exprs/access.c
index 1c3a880..a8f0dc9 100644
--- a/src/analysis/scan/exprs/access.c
+++ b/src/analysis/scan/exprs/access.c
@@ -428,6 +428,7 @@ static ScanReductionState g_scan_named_access_reduce(GScanNamedAccess *expr, GSc
ScanReductionState result; /* Etat synthétisé à retourner */
GRegisteredItem *resolved; /* Cible concrète obtenue */
GScanExpression *new_next; /* Nouvelle version du suivant */
+ const char *current_rule; /* Nom de la règle courante */
bool status; /* Bilan d'une autre règle */
resolved = _g_scan_named_access_prepare_reduction(expr, ctx, scope);
@@ -478,10 +479,20 @@ static ScanReductionState g_scan_named_access_reduce(GScanNamedAccess *expr, GSc
if (g_scan_context_has_rule_for_name(ctx, expr->target))
{
- status = g_scan_context_has_match_for_rule(ctx, expr->target);
+ current_rule = g_scan_scope_get_rule_name(scope);
- *out = g_scan_literal_expression_new(LVT_BOOLEAN, &status);
- result = SRS_REDUCED;
+ /* Si référence circulaire il y a... */
+ if (strcmp(current_rule, expr->target) == 0)
+ result = SRS_UNRESOLVABLE;
+
+ else
+ {
+ status = g_scan_context_has_match_for_rule(ctx, expr->target);
+
+ *out = g_scan_literal_expression_new(LVT_BOOLEAN, &status);
+ result = SRS_REDUCED;
+
+ }
}
diff --git a/src/analysis/scan/scope-int.h b/src/analysis/scan/scope-int.h
new file mode 100644
index 0000000..2d70532
--- /dev/null
+++ b/src/analysis/scan/scope-int.h
@@ -0,0 +1,54 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * scope-int.h - prototypes internes pour la définition d'une portée locale de variables
+ *
+ * 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_SCOPE_INT_H
+#define _ANALYSIS_SCAN_SCOPE_INT_H
+
+
+#include "scope.h"
+
+
+
+/* Portée locale de variables et règle d'appartenance (instance) */
+struct _GScanScope
+{
+ GObject parent; /* A laisser en premier */
+
+ char *rule; /* Règle d'appartenance */
+
+};
+
+/* Portée locale de variables et règle d'appartenance (classe) */
+struct _GScanScopeClass
+{
+ GObjectClass parent; /* A laisser en premier */
+
+};
+
+
+/* Met en place une définition de portée pour variables. */
+bool g_scan_scope_create(GScanScope *, const char *);
+
+
+
+#endif /* _ANALYSIS_SCAN_SCOPE_INT_H */
diff --git a/src/analysis/scan/scope.c b/src/analysis/scan/scope.c
new file mode 100644
index 0000000..852b1d3
--- /dev/null
+++ b/src/analysis/scan/scope.c
@@ -0,0 +1,209 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * scope.c - définition d'une portée locale de variables
+ *
+ * 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 "scope.h"
+
+
+#include <malloc.h>
+#include <string.h>
+
+
+#include "scope-int.h"
+
+
+
+/* Initialise la classe des définitions de portée locale. */
+static void g_scan_scope_class_init(GScanScopeClass *);
+
+/* Initialise une instance de définition de portée locale. */
+static void g_scan_scope_init(GScanScope *);
+
+/* Supprime toutes les références externes. */
+static void g_scan_scope_dispose(GScanScope *);
+
+/* Procède à la libération totale de la mémoire. */
+static void g_scan_scope_finalize(GScanScope *);
+
+
+
+/* Indique le type défini pour la définition de portée de variables. */
+G_DEFINE_TYPE(GScanScope, g_scan_scope, G_TYPE_OBJECT);
+
+
+/******************************************************************************
+* *
+* Paramètres : klass = classe à initialiser. *
+* *
+* Description : Initialise la classe des définitions de portée locale. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_scope_class_init(GScanScopeClass *klass)
+{
+ GObjectClass *object; /* Autre version de la classe */
+
+ object = G_OBJECT_CLASS(klass);
+
+ object->dispose = (GObjectFinalizeFunc/* ! */)g_scan_scope_dispose;
+ object->finalize = (GObjectFinalizeFunc)g_scan_scope_finalize;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : scope = instance à initialiser. *
+* *
+* Description : Initialise une instance de définition de portée locale. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_scope_init(GScanScope *scope)
+{
+ scope->rule = NULL;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : scope = instance d'objet GLib à traiter. *
+* *
+* Description : Supprime toutes les références externes. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_scope_dispose(GScanScope *scope)
+{
+ G_OBJECT_CLASS(g_scan_scope_parent_class)->dispose(G_OBJECT(scope));
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : scope = instance d'objet GLib à traiter. *
+* *
+* Description : Procède à la libération totale de la mémoire. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_scope_finalize(GScanScope *scope)
+{
+ if (scope->rule != NULL)
+ free(scope->rule);
+
+ G_OBJECT_CLASS(g_scan_scope_parent_class)->finalize(G_OBJECT(scope));
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : rule = désignation de la règle courante dans l'analyse. *
+* *
+* Description : Prépare une définition de portée pour variables. *
+* *
+* Retour : Définition mise en place. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GScanScope *g_scan_scope_new(const char *rule)
+{
+ GScanScope *result; /* Structure à retourner */
+
+ result = g_object_new(G_TYPE_SCAN_SCOPE, NULL);
+
+ if (!g_scan_scope_create(result, rule))
+ g_clear_object(&result);
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : scope = définition de portée à à initialiser pleinement. *
+* rule = désignation de la règle courante dans l'analyse. *
+* *
+* Description : Met en place une définition de portée pour variables. *
+* *
+* Retour : Bilan de l'opération. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool g_scan_scope_create(GScanScope *scope, const char *rule)
+{
+ bool result; /* Bilan à retourner */
+
+ result = true;
+
+ scope->rule = strdup(rule);
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : scope = définition de portée à consulter. *
+* *
+* Description : Fournit le nom de la règle d'appartenance. *
+* *
+* Retour : Nom de la règle courante pour une analyse. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+const char *g_scan_scope_get_rule_name(const GScanScope *scope)
+{
+ const char *result; /* Chemin à retourner */
+
+ result = scope->rule;
+
+ return result;
+
+}
diff --git a/src/analysis/scan/scope.h b/src/analysis/scan/scope.h
index 1e5de2c..26b8757 100644
--- a/src/analysis/scan/scope.h
+++ b/src/analysis/scan/scope.h
@@ -25,12 +25,34 @@
#define _ANALYSIS_SCAN_SCOPE_H
+#include <glib-object.h>
+#include <stdbool.h>
-typedef void *GScanScope;
+#define G_TYPE_SCAN_SCOPE g_scan_scope_get_type()
+#define G_SCAN_SCOPE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), G_TYPE_SCAN_SCOPE, GScanScope))
+#define G_IS_SCAN_SCOPE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), G_TYPE_SCAN_SCOPE))
+#define G_SCAN_SCOPE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_SCAN_SCOPE, GScanScopeClass))
+#define G_IS_SCAN_SCOPE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_SCAN_SCOPE))
+#define G_SCAN_SCOPE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_SCAN_SCOPE, GScanScopeClass))
+/* Portée locale de variables et règle d'appartenance (instance) */
+typedef struct _GScanScope GScanScope;
+
+/* Portée locale de variables et règle d'appartenance (classe) */
+typedef struct _GScanScopeClass GScanScopeClass;
+
+
+/* Indique le type défini pour la définition de portée de variables. */
+GType g_scan_scope_get_type(void);
+
+/* Prépare une définition de portée pour variables. */
+GScanScope *g_scan_scope_new(const char *);
+
+/* Fournit le nom de la règle d'appartenance. */
+const char *g_scan_scope_get_rule_name(const GScanScope *);
generated by cgit v0.11.2-87-g4458 at 2025-10-31 18:21:54 (GMT)