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-rw-r--r--src/analysis/scan/exprs/Makefile.am2
-rw-r--r--src/analysis/scan/exprs/setcounter-int.h62
-rw-r--r--src/analysis/scan/exprs/setcounter.c368
-rw-r--r--src/analysis/scan/exprs/setcounter.h75
4 files changed, 507 insertions, 0 deletions
diff --git a/src/analysis/scan/exprs/Makefile.am b/src/analysis/scan/exprs/Makefile.am
index d1a122a..a0b2f3d 100644
--- a/src/analysis/scan/exprs/Makefile.am
+++ b/src/analysis/scan/exprs/Makefile.am
@@ -27,6 +27,8 @@ libanalysisscanexprs_la_SOURCES = \
relational.h relational.c \
set-int.h \
set.h set.c \
+ setcounter-int.h \
+ setcounter.h setcounter.c \
strop-int.h \
strop.h strop.c
diff --git a/src/analysis/scan/exprs/setcounter-int.h b/src/analysis/scan/exprs/setcounter-int.h
new file mode 100644
index 0000000..fbed209
--- /dev/null
+++ b/src/analysis/scan/exprs/setcounter-int.h
@@ -0,0 +1,62 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * setcounter-int.h - prototypes internes pour le décompte global de correspondances locales
+ *
+ * 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_EXPRS_SETCOUNTER_INT_H
+#define _ANALYSIS_SCAN_EXPRS_SETCOUNTER_INT_H
+
+
+#include "setcounter.h"
+
+
+#include "../expr-int.h"
+
+
+
+/* Décompte global de correspondances locales (instance) */
+struct _GScanSetMatchCounter
+{
+ GScanExpression parent; /* A laisser en premier */
+
+ GSearchPattern **patterns; /* Motifs associés */
+ size_t count; /* Nombre de ces motifs */
+
+ ScanSetCounterType type; /* Type de décompte */
+ size_t number; /* Eventuel volume associé */
+
+};
+
+/* Décompte global de correspondances locales (classe) */
+struct _GScanSetMatchCounterClass
+{
+ GScanExpressionClass parent; /* A laisser en premier */
+
+};
+
+
+
+/* Met en place un décompte de motifs avec correspondances. */
+bool g_scan_set_match_counter_create(GScanSetMatchCounter *, GSearchPattern ** const, size_t);
+
+
+
+#endif /* _ANALYSIS_SCAN_EXPRS_SETCOUNTER_INT_H */
diff --git a/src/analysis/scan/exprs/setcounter.c b/src/analysis/scan/exprs/setcounter.c
new file mode 100644
index 0000000..14e7676
--- /dev/null
+++ b/src/analysis/scan/exprs/setcounter.c
@@ -0,0 +1,368 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * setcounter.c - décompte global de correspondances locales
+ *
+ * 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 "setcounter.h"
+
+
+#include "setcounter-int.h"
+#include "literal.h"
+
+
+
+/* --------------------- INSTANCIATION D'UNE FORME DE CONDITION --------------------- */
+
+
+/* Initialise la classe des opérations booléennes. */
+static void g_scan_set_match_counter_class_init(GScanSetMatchCounterClass *);
+
+/* Initialise une instance d'opération booléenne. */
+static void g_scan_set_match_counter_init(GScanSetMatchCounter *);
+
+/* Supprime toutes les références externes. */
+static void g_scan_set_match_counter_dispose(GScanSetMatchCounter *);
+
+/* Procède à la libération totale de la mémoire. */
+static void g_scan_set_match_counter_finalize(GScanSetMatchCounter *);
+
+
+
+/* --------------------- IMPLEMENTATION DES FONCTIONS DE CLASSE --------------------- */
+
+
+/* Réduit une expression à une forme plus simple. */
+static ScanReductionState g_scan_set_match_counter_reduce(const GScanSetMatchCounter *, GScanContext *, GScanScope *, GScanExpression **);
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/* INSTANCIATION D'UNE FORME DE CONDITION */
+/* ---------------------------------------------------------------------------------- */
+
+
+/* Indique le type défini pour un décompte de résultats lors d'une recherche de motifs. */
+G_DEFINE_TYPE(GScanSetMatchCounter, g_scan_set_match_counter, G_TYPE_SCAN_EXPRESSION);
+
+
+/******************************************************************************
+* *
+* Paramètres : klass = classe à initialiser. *
+* *
+* Description : Initialise la classe des opérations booléennes. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_set_match_counter_class_init(GScanSetMatchCounterClass *klass)
+{
+ GObjectClass *object; /* Autre version de la classe */
+ GScanExpressionClass *expr; /* Version de classe parente */
+
+ object = G_OBJECT_CLASS(klass);
+
+ object->dispose = (GObjectFinalizeFunc/* ! */)g_scan_set_match_counter_dispose;
+ object->finalize = (GObjectFinalizeFunc)g_scan_set_match_counter_finalize;
+
+ expr = G_SCAN_EXPRESSION_CLASS(klass);
+
+ expr->cmp_rich = (compare_expr_rich_fc)NULL;
+ expr->reduce = (reduce_expr_fc)g_scan_set_match_counter_reduce;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : op = instance à initialiser. *
+* *
+* Description : Initialise une instance d'opération booléenne. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_set_match_counter_init(GScanSetMatchCounter *counter)
+{
+ counter->patterns = NULL;
+ counter->count = 0;
+
+ counter->type = SSCT_NONE;
+ counter->number = 0;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : op = instance d'objet GLib à traiter. *
+* *
+* Description : Supprime toutes les références externes. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_set_match_counter_dispose(GScanSetMatchCounter *counter)
+{
+ size_t i; /* Boucle de parcours */
+
+ for (i = 0; i < counter->count; i++)
+ g_clear_object(&counter->patterns[i]);
+
+ G_OBJECT_CLASS(g_scan_set_match_counter_parent_class)->dispose(G_OBJECT(counter));
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : op = instance d'objet GLib à traiter. *
+* *
+* Description : Procède à la libération totale de la mémoire. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_scan_set_match_counter_finalize(GScanSetMatchCounter *counter)
+{
+ if (counter->patterns != NULL)
+ free(counter->patterns);
+
+ G_OBJECT_CLASS(g_scan_set_match_counter_parent_class)->finalize(G_OBJECT(counter));
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : patterns = motifs à impliquer. *
+* count = quantité de ces motifs. *
+* *
+* Description : Constitue un décompte de motifs avec correspondances. *
+* *
+* Retour : Expression mise en place. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GScanExpression *g_scan_set_match_counter_new(GSearchPattern ** const patterns, size_t count)
+{
+ GScanExpression *result; /* Structure à retourner */
+
+ result = g_object_new(G_TYPE_SCAN_SET_MATCH_COUNTER, NULL);
+
+ if (!g_scan_set_match_counter_create(G_SCAN_SET_MATCH_COUNTER(result), patterns, count))
+ g_clear_object(&result);
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : counter = instance à initialiser pleinement. *
+* patterns = motifs à impliquer. *
+* count = quantité de ces motifs. *
+* *
+* Description : Met en place un décompte de motifs avec correspondances. *
+* *
+* Retour : Bilan de l'opération. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool g_scan_set_match_counter_create(GScanSetMatchCounter *counter, GSearchPattern ** const patterns, size_t count)
+{
+ bool result; /* Bilan à retourner */
+ size_t i; /* Boucle de parcours */
+
+ result = g_scan_expression_create(G_SCAN_EXPRESSION(counter), SRS_WAIT_FOR_SCAN);
+ if (!result) goto exit;
+
+ counter->patterns = malloc(count * sizeof(GSearchPattern *));
+ counter->count = count;
+
+ for (i = 0; i < count; i++)
+ {
+ counter->patterns[i] = patterns[i];
+ g_object_ref(G_OBJECT(patterns[i]));
+ }
+
+ exit:
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : counter = décompte à compléter. *
+* patterns = motifs à impliquer. *
+* count = quantité de ces motifs. *
+* *
+* Description : Ajoute de nouveaux motifs à un ensemble à décompter. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+void g_scan_set_match_counter_add_extra_patterns(GScanSetMatchCounter *counter, GSearchPattern ** const patterns, size_t count)
+{
+ size_t first; /* Premier emplacement libre */
+ size_t i; /* Boucle de parcours */
+
+ first = counter->count;
+
+ counter->count += count;
+ counter->patterns = realloc(counter->patterns, counter->count * sizeof(GSearchPattern *));
+
+ for (i = 0; i < count; i++)
+ {
+ counter->patterns[first + i] = patterns[i];
+ g_object_ref(G_OBJECT(patterns[i]));
+ }
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : counter = décompte à configurer. *
+* type = type de décompte à considérer. *
+* number = volume minimal de motifs avec correspondances. *
+* *
+* Description : Précise le volume de motifs avec correspondances à retrouver.*
+* *
+* Retour : Bilan de validité des arguments fournis. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+bool g_scan_set_match_counter_define_expected_matches(GScanSetMatchCounter *counter, ScanSetCounterType type, size_t *number)
+{
+ bool result; /* Bilan à retourner */
+
+ counter->type = type;
+
+ if (type == SSCT_NUMBER)
+ {
+ counter->number = *number;
+ result = (counter->number <= counter->count);
+ }
+ else
+ result = true;
+
+ return result;
+
+}
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/* IMPLEMENTATION DES FONCTIONS DE CLASSE */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+* *
+* Paramètres : expr = expression 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 ScanReductionState g_scan_set_match_counter_reduce(const GScanSetMatchCounter *expr, GScanContext *ctx, GScanScope *scope, GScanExpression **out)
+{
+ ScanReductionState result; /* Etat synthétisé à retourner */
+ size_t matched; /* Qté de motifs avec résultats*/
+ size_t i; /* Boucle de parcours */
+ size_t count; /* Quantité de correspondances */
+ bool status; /* Bilan d'évaluation finale */
+
+ if (g_scan_context_is_scan_done(ctx))
+ {
+ matched = 0;
+
+ for (i = 0; i < expr->count; i++)
+ {
+ g_scan_context_get_full_matches(ctx, expr->patterns[i], &count);
+
+ if (count > 0)
+ matched++;
+
+ }
+
+ switch (expr->type)
+ {
+ case SSCT_NONE:
+ status = (matched == 0);
+ break;
+
+ case SSCT_ANY:
+ status = (matched >= 1);
+ break;
+
+ case SSCT_ALL:
+ status = (matched == expr->count);
+ break;
+
+ case SSCT_NUMBER:
+ status = (matched >= expr->number);
+ break;
+
+ }
+
+ *out = g_scan_literal_expression_new(LVT_BOOLEAN, &status);
+
+ result = SRS_REDUCED;
+
+ }
+ else
+ result = SRS_WAIT_FOR_SCAN;
+
+ return result;
+
+}
diff --git a/src/analysis/scan/exprs/setcounter.h b/src/analysis/scan/exprs/setcounter.h
new file mode 100644
index 0000000..59762f9
--- /dev/null
+++ b/src/analysis/scan/exprs/setcounter.h
@@ -0,0 +1,75 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * setcounter.h - prototypes pour le décompte global de correspondances locales
+ *
+ * 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_EXPRS_SETCOUNTER_H
+#define _ANALYSIS_SCAN_EXPRS_SETCOUNTER_H
+
+
+#include <glib-object.h>
+
+
+#include "../expr.h"
+#include "../pattern.h"
+
+
+
+#define G_TYPE_SCAN_SET_MATCH_COUNTER g_scan_set_match_counter_get_type()
+#define G_SCAN_SET_MATCH_COUNTER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), G_TYPE_SCAN_SET_MATCH_COUNTER, GScanSetMatchCounter))
+#define G_IS_SCAN_SET_MATCH_COUNTER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), G_TYPE_SCAN_SET_MATCH_COUNTER))
+#define G_SCAN_SET_MATCH_COUNTER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_SCAN_SET_MATCH_COUNTER, GScanSetMatchCounterClass))
+#define G_IS_SCAN_SET_MATCH_COUNTER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_SCAN_SET_MATCH_COUNTER))
+#define G_SCAN_SET_MATCH_COUNTER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), G_TYPE_SCAN_SET_MATCH_COUNTER, GScanSetMatchCounterClass))
+
+
+/* Décompte global de correspondances locales (instance) */
+typedef struct _GScanSetMatchCounter GScanSetMatchCounter;
+
+/* Décompte global de correspondances locales (classe) */
+typedef struct _GScanSetMatchCounterClass GScanSetMatchCounterClass;
+
+
+/* Indique le type défini pour un décompte de résultats lors d'une recherche de motifs. */
+GType g_scan_set_match_counter_get_type(void);
+
+/* Met en place un décompte de correspondances obtenues. */
+GScanExpression *g_scan_set_match_counter_new(GSearchPattern ** const, size_t);
+
+/* Ajoute de nouveaux motifs à un ensemble à décompter. */
+void g_scan_set_match_counter_add_extra_patterns(GScanSetMatchCounter *, GSearchPattern ** const, size_t);
+
+/* Formes de volume de correspondances */
+typedef enum _ScanSetCounterType
+{
+ SSCT_NONE, /* Aucun motif avec résultats */
+ SSCT_ANY, /* Au moins un motif trouvé */
+ SSCT_ALL, /* Tous les motifs présents */
+ SSCT_NUMBER, /* Au moins n motifs avec rés. */
+
+} ScanSetCounterType;
+
+/* Précise le volume de motifs avec correspondances à retrouver. */
+bool g_scan_set_match_counter_define_expected_matches(GScanSetMatchCounter *, ScanSetCounterType, size_t *);
+
+
+
+#endif /* _ANALYSIS_SCAN_EXPRS_SETCOUNTER_H */
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