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authorCyrille Bagard <nocbos@gmail.com>2018-03-11 21:57:05 (GMT)
committerCyrille Bagard <nocbos@gmail.com>2018-03-11 21:57:05 (GMT)
commit8088f1cbb4304c686ff41520099707a333084a4e (patch)
tree147411c3f90097dc1ae950ec390df2dfccf07ad7 /plugins/dexbnf/shorty.c
parenta33dd28e763e3a8b04145fb549aca9320e100a4b (diff)
Defined a new Dex demangler with MUTF-8 support as plugin.
Diffstat (limited to 'plugins/dexbnf/shorty.c')
-rw-r--r--plugins/dexbnf/shorty.c227
1 files changed, 227 insertions, 0 deletions
diff --git a/plugins/dexbnf/shorty.c b/plugins/dexbnf/shorty.c
new file mode 100644
index 0000000..0b452df
--- /dev/null
+++ b/plugins/dexbnf/shorty.c
@@ -0,0 +1,227 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * shorty.c - décodage de routines pour Dex
+ *
+ * Copyright (C) 2018 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 "shorty.h"
+
+
+#include <analysis/types/basic.h>
+#include <analysis/types/cse.h>
+
+
+
+/* Extrait un type particulier dans un décodage Dex. */
+static GDataType *dsd_shorty_return_type(input_buffer *);
+
+/* Extrait un type particulier dans un décodage Dex. */
+static GDataType *dsd_shorty_field_type(input_buffer *, char);
+
+
+
+/******************************************************************************
+* *
+* Paramètres : buffer = tampon contenant les données utiles. *
+* *
+* Description : Extrait un routine particulière depuis un codage Dex. *
+* *
+* Retour : Nouveau type mis en place ou NULL en cas d'erreur. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GBinRoutine *dsd_shorty_descriptor(input_buffer *buffer)
+{
+ GBinRoutine *result; /* Type à retourner */
+ GDataType *type; /* Description de type obtenue */
+ char ahead; /* Caractère déterminant lu */
+ GBinVariable *var; /* Argument de routine */
+
+ /**
+ * La règle traitée est la suivante :
+ *
+ * ShortyDescriptor →
+ * ShortyReturnType (ShortyFieldType)*
+ *
+ */
+
+ result = g_binary_routine_new();
+
+ /* Retour */
+
+ type = dsd_shorty_return_type(buffer);
+
+ if (type == NULL)
+ goto dsd_error;
+
+ else
+ g_binary_routine_set_return_type(result, type);
+
+ /* Arguments */
+
+ for (ahead = text_input_buffer_next_char(buffer);
+ ahead != '\0';
+ ahead = text_input_buffer_next_char(buffer))
+ {
+ type = dsd_shorty_field_type(buffer, ahead);
+
+ if (type == NULL)
+ goto dsd_error;
+
+ else
+ {
+ var = g_binary_variable_new(type);
+ g_binary_routine_add_arg(result, var);
+ }
+
+ }
+
+ return result;
+
+ dsd_error:
+
+ g_object_unref(G_OBJECT(result));
+
+ return NULL;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : buffer = tampon contenant les données utiles. *
+* *
+* Description : Extrait un type particulier dans un décodage Dex. *
+* *
+* Retour : Nouveau type mis en place ou NULL en cas d'erreur. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static GDataType *dsd_shorty_return_type(input_buffer *buffer)
+{
+ GDataType *result; /* Type à retourner */
+ char ahead; /* Caractère déterminant lu */
+
+ /**
+ * La règle traitée est la suivante :
+ *
+ * ShortyReturnType →
+ * 'V'
+ * | ShortyFieldType
+ *
+ */
+
+ ahead = text_input_buffer_next_char(buffer);
+
+ if (ahead == 'V')
+ result = g_basic_type_new(BTP_VOID);
+
+ else
+ result = dsd_shorty_field_type(buffer, ahead);
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : buffer = tampon contenant les données utiles. *
+* ahead = caractère déjà dépilé de ces données. *
+* *
+* Description : Extrait un type particulier dans un décodage Dex. *
+* *
+* Retour : Nouveau type mis en place ou NULL en cas d'erreur. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static GDataType *dsd_shorty_field_type(input_buffer *buffer, char ahead)
+{
+ GDataType *result; /* Type à retourner */
+
+ /**
+ * La règle traitée est la suivante :
+ *
+ * ShortyFieldType →
+ * 'Z'
+ * | 'B'
+ * | 'S'
+ * | 'C'
+ * | 'I'
+ * | 'J'
+ * | 'F'
+ * | 'D'
+ * | 'L'
+ *
+ */
+
+ switch (ahead)
+ {
+ case 'Z':
+ result = g_basic_type_new(BTP_BOOL);
+ break;
+
+ case 'B':
+ result = g_basic_type_new(BTP_UCHAR);
+ break;
+
+ case 'S':
+ result = g_basic_type_new(BTP_SHORT);
+ break;
+
+ case 'C':
+ result = g_basic_type_new(BTP_CHAR);
+ break;
+
+ case 'I':
+ result = g_basic_type_new(BTP_INT);
+ break;
+
+ case 'J':
+ result = g_basic_type_new(BTP_LONG);
+ break;
+
+ case 'F':
+ result = g_basic_type_new(BTP_FLOAT);
+ break;
+
+ case 'D':
+ result = g_basic_type_new(BTP_DOUBLE);
+ break;
+
+ case 'L':
+ result = g_class_enum_type_new(CET_CLASS, NULL);
+ break;
+
+ default:
+ result = NULL;
+ break;
+
+ }
+
+ return result;
+
+}