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/* Chrysalide - Outil d'analyse de fichiers binaires
* class.c - annotation des définitions de classes
*
* Copyright (C) 2016-2017 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 "class.h"
#include <i18n.h>
#include <plugins/dex/class.h>
#include <plugins/dex/dex_def.h>
#include <plugins/fmtp/parser.h>
#include "code.h"
/* Définition des champs */
static fmt_field_def _dex_class_defs[] = {
{
.name = "class_idx",
.size = MDS_32_BITS,
.repeat = 1,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Index into the type_ids list for this class"))
},
{
.name = "access_flags",
.size = MDS_32_BITS,
.repeat = 1,
PLAIN_COMMENT(__("Access flags for the class"))
},
{
.name = "superclass_idx",
.size = MDS_32_BITS,
.repeat = 1,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Index for the superclass or NO_INDEX if this class has no superclass"))
},
{
.name = "interfaces_off",
.size = MDS_32_BITS,
.repeat = 1,
PLAIN_COMMENT(__("Offset to the list of interfaces"))
},
{
.name = "source_file_idx",
.size = MDS_32_BITS,
.repeat = 1,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Index for the name of the file containing the original source or NO_INDEX"))
},
{
.name = "annotations_off",
.size = MDS_32_BITS,
.repeat = 1,
PLAIN_COMMENT(__("Offset to the annotations structure for this class"))
},
{
.name = "class_data_off",
.size = MDS_32_BITS,
.repeat = 1,
PLAIN_COMMENT(__("Offset to the associated class data for this item"))
},
{
.name = "static_values_off",
.size = MDS_32_BITS,
.repeat = 1,
PLAIN_COMMENT(__("Offset to the list of initial values for static fields"))
}
};
static fmt_field_def _dex_class_data[] = {
{
.name = "static_fields_size",
.is_uleb128 = true,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Number of static fields defined in this item"))
},
{
.name = "instance_fields_size",
.is_uleb128 = true,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Number of instance fields defined in this item"))
},
{
.name = "direct_methods_size",
.is_uleb128 = true,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Number of direct methods defined in this item"))
},
{
.name = "virtual_methods_size",
.is_uleb128 = true,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Number of virtual methods defined in this item"))
}
};
static fmt_field_def _dex_encoded_field[] = {
{
.name = "field_idx_diff",
.is_uleb128 = true,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Index into the field_ids list for the identity of this field"))
},
{
.name = "access_flags",
.is_uleb128 = true,
PLAIN_COMMENT(__("Access flags for the field"))
}
};
static fmt_field_def _dex_encoded_method[] = {
{
.name = "method_idx_diff",
.is_uleb128 = true,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Index into the method_ids list for the identity of this method"))
},
{
.name = "access_flags",
.is_uleb128 = true,
DISPLAY_RULES(IOD_DEC),
PLAIN_COMMENT(__("Access flags for the method"))
},
{
.name = "code_off",
.is_uleb128 = true,
PLAIN_COMMENT(__("Offset to the code structure for this method"))
}
};
/* Commente les définitions des classes pour la VM Dalvik. */
static bool annotate_dex_class_data(const GDexFormat *, GPreloadInfo *, const GDexClass *, uint32_t );
/* Commente les définitions des champs encodés. */
static bool annotate_dex_encoded_field(const GDexFormat *, GPreloadInfo *, vmpa2t *);
/* Commente les définitions des méthodes encodées. */
static bool annotate_dex_encoded_method(const GDexFormat *, GPreloadInfo *, const encoded_method *, vmpa2t *);
/******************************************************************************
* *
* Paramètres : format = description de l'exécutable à compléter. *
* info = informations à constituer en avance de phase. *
* status = barre de statut à tenir informée. *
* *
* Description : Commente les définitions des classes pour la VM Dalvik. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool annotate_dex_class_defs(const GDexFormat *format, GPreloadInfo *info, GtkStatusStack *status)
{
bool result; /* Bilan à retourner */
const dex_header *header; /* En-tête principale */
vmpa2t pos; /* Tête de lecture des symboles*/
activity_id_t msg; /* Message de progression */
GBinFormat *bformat; /* Autre version du format */
uint32_t i; /* Boucle de parcours */
GDexClass *class; /* Classe chargée à manipuler */
const class_def_item *def; /* Définition brute à lire */
header = g_dex_format_get_header(format);
result = g_exe_format_translate_offset_into_vmpa(G_EXE_FORMAT(format), header->class_defs_off, &pos);
if (!result)
goto adcd_exit;
msg = gtk_status_stack_add_activity(status, _("Writing annotations for all Dex classes..."),
header->class_defs_size);
bformat = G_BIN_FORMAT(format);
for (i = 0; i < header->class_defs_size && result; i++)
{
result = parse_field_definitions(PARSING_DEFS(_dex_class_defs), bformat, info, &pos, NULL);
if (!result) break;
/* Annotations supplémentaires */
class = g_dex_format_get_class(format, i);
def = g_dex_class_get_definition(class);
if (def->class_data_off > 0)
result = annotate_dex_class_data(format, info, class, def->class_data_off);
/* TODO : g_object_unref(G_OBJECT(class));*/
gtk_status_stack_update_activity_value(status, msg, 1);
}
gtk_status_stack_remove_activity(status, msg);
adcd_exit:
return result;
}
/******************************************************************************
* *
* Paramètres : format = description de l'exécutable à compléter. *
* info = informations à constituer en avance de phase. *
* class = classe Dex dont les données sont à commenter. *
* offset = tête de lecture physique des symboles. *
* *
* Description : Commente les définitions des classes pour la VM Dalvik. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
static bool annotate_dex_class_data(const GDexFormat *format, GPreloadInfo *info, const GDexClass *class, uint32_t offset)
{
bool result; /* Bilan à retourner */
vmpa2t pos; /* Tête de lecture des symboles*/
GBinFormat *bformat; /* Autre version du format */
const class_data_item *data; /* Données chargées à lire */
uleb128_t i; /* Boucle de parcours */
result = g_exe_format_translate_offset_into_vmpa(G_EXE_FORMAT(format), offset, &pos);
if (!result)
goto adcd_exit;
bformat = G_BIN_FORMAT(format);
result = parse_field_definitions(PARSING_DEFS(_dex_class_data), bformat, info, &pos, NULL);
if (!result)
goto adcd_exit;
/* Chargements complémentaires */
data = g_dex_class_get_data(class);
if (data != NULL)
{
for (i = 0; i < data->static_fields_size && result; i++)
result = annotate_dex_encoded_field(format, info, &pos);
for (i = 0; i < data->instance_fields_size && result; i++)
result = annotate_dex_encoded_field(format, info, &pos);
for (i = 0; i < data->direct_methods_size && result; i++)
result = annotate_dex_encoded_method(format, info, &data->direct_methods[i], &pos);
for (i = 0; i < data->virtual_methods_size && result; i++)
result = annotate_dex_encoded_method(format, info, &data->virtual_methods[i], &pos);
}
adcd_exit:
return result;
}
/******************************************************************************
* *
* Paramètres : format = description de l'exécutable à compléter. *
* info = informations à constituer en avance de phase. *
* pos = tête de lecture à faire progresser. [OUT] *
* *
* Description : Commente les définitions des champs encodés. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
static bool annotate_dex_encoded_field(const GDexFormat *format, GPreloadInfo *info, vmpa2t *pos)
{
bool result; /* Bilan à retourner */
GBinFormat *bformat; /* Autre version du format */
bformat = G_BIN_FORMAT(format);
result = parse_field_definitions(PARSING_DEFS(_dex_encoded_field), bformat, info, pos, NULL);
return result;
}
/******************************************************************************
* *
* Paramètres : format = description de l'exécutable à compléter. *
* info = informations à constituer en avance de phase. *
* method = méthode à décrire. *
* pos = tête de lecture à faire progresser. [OUT] *
* *
* Description : Commente les définitions des méthodes encodées. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
static bool annotate_dex_encoded_method(const GDexFormat *format, GPreloadInfo *info, const encoded_method *method, vmpa2t *pos)
{
bool result; /* Bilan à retourner */
GBinFormat *bformat; /* Autre version du format */
bformat = G_BIN_FORMAT(format);
result = parse_field_definitions(PARSING_DEFS(_dex_encoded_method), bformat, info, pos, NULL);
/* Chargements complémentaires, si non abstraite ni native */
if (result && method->code_off > 0)
result = annotate_dex_code_item(format, info, method->code_off);
return result;
}
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