diff options
Diffstat (limited to 'src/analysis/scan/exprs/handler.c')
| -rw-r--r-- | src/analysis/scan/exprs/handler.c | 132 |
1 files changed, 112 insertions, 20 deletions
diff --git a/src/analysis/scan/exprs/handler.c b/src/analysis/scan/exprs/handler.c index 1676522..1b6416e 100644 --- a/src/analysis/scan/exprs/handler.c +++ b/src/analysis/scan/exprs/handler.c @@ -122,7 +122,9 @@ static void g_scan_pattern_handler_class_init(GScanPatternHandlerClass *klass) static void g_scan_pattern_handler_init(GScanPatternHandler *handler) { - handler->pattern = NULL; + handler->patterns = NULL; + handler->count = 0; + handler->type = SHT_RAW; } @@ -142,7 +144,10 @@ static void g_scan_pattern_handler_init(GScanPatternHandler *handler) static void g_scan_pattern_handler_dispose(GScanPatternHandler *handler) { - g_clear_object(&handler->pattern); + size_t i; /* Boucle de parcours */ + + for (i = 0; i < handler->count; i++) + g_clear_object(&handler->patterns[i]); G_OBJECT_CLASS(g_scan_pattern_handler_parent_class)->dispose(G_OBJECT(handler)); @@ -170,8 +175,9 @@ static void g_scan_pattern_handler_finalize(GScanPatternHandler *handler) /****************************************************************************** * * -* Paramètres : pattern = motif à impliquer. * -* type = type de manipulation attendue. * +* Paramètres : patterns = motifs à impliquer. * +* count = quantité de ces motifs. * +* type = type de manipulation attendue. * * * * Description : Met en place une manipulation de correspondances établies. * * * @@ -181,13 +187,13 @@ static void g_scan_pattern_handler_finalize(GScanPatternHandler *handler) * * ******************************************************************************/ -GScanExpression *g_scan_pattern_handler_new(GSearchPattern *pattern, ScanHandlerType type) +GScanExpression *g_scan_pattern_handler_new(GSearchPattern ** const patterns, size_t count, ScanHandlerType type) { GScanExpression *result; /* Structure à retourner */ result = g_object_new(G_TYPE_SCAN_PATTERN_HANDLER, NULL); - if (!g_scan_pattern_handler_create(G_SCAN_PATTERN_HANDLER(result), pattern, type)) + if (!g_scan_pattern_handler_create(G_SCAN_PATTERN_HANDLER(result), patterns, count, type)) g_clear_object(&result); return result; @@ -197,9 +203,10 @@ GScanExpression *g_scan_pattern_handler_new(GSearchPattern *pattern, ScanHandler /****************************************************************************** * * -* Paramètres : handler = instance à initialiser pleinement. * -* pattern = motif à impliquer. * -* type = type de manipulation attendue. * +* Paramètres : handler = instance à initialiser pleinement. * +* patterns = motifs à impliquer. * +* count = quantité de ces motifs. * +* type = type de manipulation attendue. * * * * Description : Met en place une manipulation de correspondances établies. * * * @@ -209,15 +216,22 @@ GScanExpression *g_scan_pattern_handler_new(GSearchPattern *pattern, ScanHandler * * ******************************************************************************/ -bool g_scan_pattern_handler_create(GScanPatternHandler *handler, GSearchPattern *pattern, ScanHandlerType type) +bool g_scan_pattern_handler_create(GScanPatternHandler *handler, GSearchPattern ** const patterns, size_t count, ScanHandlerType type) { bool result; /* Bilan à retourner */ + size_t i; /* Boucle de parcours */ result = g_scan_expression_create(G_SCAN_EXPRESSION(handler), SRS_WAIT_FOR_SCAN); if (!result) goto exit; - handler->pattern = pattern; - g_object_ref(G_OBJECT(pattern)); + handler->patterns = malloc(count * sizeof(GSearchPattern *)); + handler->count = count; + + for (i = 0; i < count; i++) + { + handler->patterns[i] = patterns[i]; + g_object_ref(G_OBJECT(patterns[i])); + } handler->type = type; @@ -228,6 +242,63 @@ bool g_scan_pattern_handler_create(GScanPatternHandler *handler, GSearchPattern } +/****************************************************************************** +* * +* Paramètres : handler = instance à initialiser pleinement. * +* ctx = contexte de suivi de l'analyse courante. * +* count = quantité de correspondances enregistrées. [OUT] * +* * +* Description : Fournit la liste de toutes les correspondances représentées. * +* * +* Retour : Liste courante de correspondances établies. * +* * +* Remarques : - * +* * +******************************************************************************/ + +GScanMatch **g_scan_pattern_handler_get_all_matches(const GScanPatternHandler *handler, GScanContext *ctx, size_t *count) +{ + GScanMatch **result; /* Liste à retourner */ + size_t used; /* Indice pour le stockage */ + size_t i; /* Boucle de parcours #1 */ + size_t partial; /* Décompte partiel */ + const GScanMatch **matches; /* Correspondances en place */ + size_t k; /* Boucle de parcours #2 */ + + result = NULL; + + if (!g_scan_pattern_handler_count_items(handler, ctx, count)) + { + *count = 0; + goto exit; + } + + if (*count == 0) + goto exit; + + result = malloc(*count * sizeof(GScanMatch *)); + + used = 0; + + for (i = 0; i < handler->count; i++) + { + matches = g_scan_context_get_full_matches(ctx, handler->patterns[i], &partial); + + for (k = 0; k < partial; k++) + { + result[used++] = matches[k]; + g_object_ref(G_OBJECT(matches[k])); + } + + } + + exit: + + return result; + +} + + /* ---------------------------------------------------------------------------------- */ /* IMPLEMENTATION DES FONCTIONS DE CLASSE */ @@ -284,9 +355,7 @@ static bool g_scan_pattern_handler_reduce_to_boolean(const GScanPatternHandler * bool result; /* Bilan à retourner */ size_t count; /* Quantité de correspondances */ - result = true; - - g_scan_context_get_full_matches(ctx, expr->pattern, &count); + result = g_scan_pattern_handler_count_items(expr, ctx, &count); *out = g_scan_literal_expression_new(LVT_BOOLEAN, (bool []){ count > 0 }); @@ -312,12 +381,20 @@ static bool g_scan_pattern_handler_reduce_to_boolean(const GScanPatternHandler * static bool g_scan_pattern_handler_count_items(const GScanPatternHandler *expr, GScanContext *ctx, size_t *count) { bool result; /* Bilan à retourner */ + size_t partial; /* Décompte partiel */ + size_t i; /* Boucle de parcours */ result = true; assert(g_scan_context_is_scan_done(ctx)); - g_scan_context_get_full_matches(ctx, expr->pattern, count); + *count = 0; + + for (i = 0; i < expr->count; i++) + { + g_scan_context_get_full_matches(ctx, expr->patterns[i], &partial); + *count += partial; + } return result; @@ -342,6 +419,7 @@ static bool g_scan_pattern_handler_count_items(const GScanPatternHandler *expr, static bool g_scan_pattern_handler_get_item(const GScanPatternHandler *expr, size_t index, GScanContext *ctx, GScanExpression **out) { bool result; /* Bilan à retourner */ + size_t i; /* Boucle de parcours */ size_t count; /* Quantité de correspondances */ const GScanMatch **matches; /* Correspondances en place */ const GScanBytesMatch *match; /* Correspondance ciblée */ @@ -353,18 +431,32 @@ static bool g_scan_pattern_handler_get_item(const GScanPatternHandler *expr, siz const bin_t *data; /* Accès aux données brutes */ sized_string_t binary; /* Conversion de formats */ + result = false; + assert(g_scan_context_is_scan_done(ctx)); - matches = g_scan_context_get_full_matches(ctx, expr->pattern, &count); + /* Identification du motif concerné */ - result = (index < count); - if (!result) goto done; + for (i = 0; i < expr->count; i++) + { + matches = g_scan_context_get_full_matches(ctx, expr->patterns[i], &count); + + if (index < count) + break; + else + index -= count; + + } + + if (i == expr->count) goto done; result = G_IS_SCAN_BYTES_MATCH(matches[index]); if (!result) goto done; match = G_SCAN_BYTES_MATCH(matches[index]); + /* Traitement adapté de la requête */ + len = g_scan_bytes_match_get_location(match, &start, &end); switch (expr->type) @@ -376,7 +468,7 @@ static bool g_scan_pattern_handler_get_item(const GScanPatternHandler *expr, siz data = g_binary_content_get_raw_access(content, &pos, len); - binary.data = data; + binary.static_bin_data = data; binary.len = len; *out = g_scan_literal_expression_new(LVT_STRING, &binary); |