Reorganized the code for target operands.

8 files changed, 597 insertions, 2 deletions

diff --git a/plugins/arm/v7/post.c b/plugins/arm/v7/post.c
index 649b462..c1c299f 100644
--- a/plugins/arm/v7/post.c
+++ b/plugins/arm/v7/post.c
@@ -24,8 +24,8 @@
 #include "post.h"
 
 
-#include <arch/target.h>
 #include <arch/operands/immediate.h>
+#include <arch/operands/target.h>
 
 
 
diff --git a/plugins/dalvik/post.c b/plugins/dalvik/post.c
index 7ba7a1d..4066c80 100644
--- a/plugins/dalvik/post.c
+++ b/plugins/dalvik/post.c
@@ -27,8 +27,8 @@
 #include <assert.h>
 
 
-#include <arch/target.h>
 #include <arch/operands/immediate.h>
+#include <arch/operands/target.h>
 
 
 
diff --git a/plugins/pychrysalide/analysis/constants.c b/plugins/pychrysalide/analysis/constants.c
index 9bc3e9f..dc507dc 100644
--- a/plugins/pychrysalide/analysis/constants.c
+++ b/plugins/pychrysalide/analysis/constants.c
@@ -154,3 +154,61 @@ int convert_to_source_endian(PyObject *arg, void *dst)
     return result;
 
 }
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : arg = argument quelconque à tenter de convertir.             *
+*                dst = destination des valeurs récupérées en cas de succès.   *
+*                                                                             *
+*  Description : Tente de convertir en constante MemoryDataSize.              *
+*                                                                             *
+*  Retour      : Bilan de l'opération, voire indications supplémentaires.     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+int convert_to_memory_data_size(PyObject *arg, void *dst)
+{
+    int result;                             /* Bilan à retourner           */
+    unsigned long value;                    /* Valeur transcrite           */
+
+    result = PyObject_IsInstance(arg, (PyObject *)&PyLong_Type);
+
+    switch (result)
+    {
+        case -1:
+            /* L'exception est déjà fixée par Python */
+            result = 0;
+            break;
+
+        case 0:
+            PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to MemoryDataSize");
+            break;
+
+        case 1:
+            value = PyLong_AsUnsignedLong(arg);
+
+            if (value != MDS_UNDEFINED
+                && (value < MDS_4_BITS_UNSIGNED && value > MDS_64_BITS_UNSIGNED)
+                && (value < MDS_4_BITS_SIGNED && value > MDS_64_BITS_SIGNED))
+            {
+                PyErr_SetString(PyExc_TypeError, "invalid value for MemoryDataSize");
+                result = 0;
+            }
+
+            else
+                *((MemoryDataSize *)dst) = value;
+
+            break;
+
+        default:
+            assert(false);
+            break;
+
+    }
+
+    return result;
+
+}
diff --git a/plugins/pychrysalide/analysis/constants.h b/plugins/pychrysalide/analysis/constants.h
index 2ab1f0a..45982bb 100644
--- a/plugins/pychrysalide/analysis/constants.h
+++ b/plugins/pychrysalide/analysis/constants.h
@@ -36,6 +36,9 @@ bool define_analysis_content_constants(PyTypeObject *);
 /* Tente de convertir en constante SourceEndian. */
 int convert_to_source_endian(PyObject *, void *);
 
+/* Tente de convertir en constante MemoryDataSize. */
+int convert_to_memory_data_size(PyObject *, void *);
+
 
 
 #endif  /* _PLUGINS_PYCHRYSALIDE_ANALYSIS_CONSTANTS_H */
diff --git a/plugins/pychrysalide/arch/operands/Makefile.am b/plugins/pychrysalide/arch/operands/Makefile.am
index 2074b6b..d4e9838 100644
--- a/plugins/pychrysalide/arch/operands/Makefile.am
+++ b/plugins/pychrysalide/arch/operands/Makefile.am
@@ -9,6 +9,7 @@ libpychrysaarchoperands_la_SOURCES =	\
 	proxy.h proxy.c						\
 	register.h register.c				\
 	rename.h rename.c					\
+	target.h target.c					\
 	targetable.h targetable.c
 
 libpychrysaarchoperands_la_LIBADD = 
diff --git a/plugins/pychrysalide/arch/operands/module.c b/plugins/pychrysalide/arch/operands/module.c
index 15d7835..f1669fb 100644
--- a/plugins/pychrysalide/arch/operands/module.c
+++ b/plugins/pychrysalide/arch/operands/module.c
@@ -33,6 +33,7 @@
 #include "proxy.h"
 #include "register.h"
 #include "rename.h"
+#include "target.h"
 #include "targetable.h"
 #include "../../helpers.h"
 
@@ -106,6 +107,7 @@ bool populate_arch_operands_module(void)
     if (result) result = ensure_python_register_operand_is_registered();
     if (result) result = ensure_python_renamed_operand_is_registered();
     if (result) result = ensure_python_renameable_operand_is_registered();
+    if (result) result = ensure_python_target_operand_is_registered();
     if (result) result = ensure_python_targetable_operand_is_registered();
 
     assert(result);
diff --git a/plugins/pychrysalide/arch/operands/target.c b/plugins/pychrysalide/arch/operands/target.c
new file mode 100644
index 0000000..5cd9f59
--- /dev/null
+++ b/plugins/pychrysalide/arch/operands/target.c
@@ -0,0 +1,483 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * target.c - équivalent Python du fichier "arch/operands/target.c"
+ *
+ * Copyright (C) 2020 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "target.h"
+
+
+#include <pygobject.h>
+
+
+#include <i18n.h>
+#include <arch/operands/target-int.h>
+#include <plugins/dt.h>
+
+
+#include "targetable.h"
+#include "../operand.h"
+#include "../../access.h"
+#include "../../helpers.h"
+#include "../../analysis/constants.h"
+#include "../../analysis/content.h"
+#include "../../arch/vmpa.h"
+#include "../../format/format.h"
+
+
+
+/* ------------------------ GLUE POUR CREATION DEPUIS PYTHON ------------------------ */
+
+
+/* Accompagne la création d'une instance dérivée en Python. */
+static PyObject *py_target_operand_new(PyTypeObject *, PyObject *, PyObject *);
+
+/* Initialise la classe des descriptions de fichier binaire. */
+static void py_target_operand_init_gclass(GTargetOperandClass *, gpointer);
+
+/* Initialise une instance sur la base du dérivé de GObject. */
+static int py_target_operand_init(PyObject *, PyObject *, PyObject *);
+
+
+
+/* ------------------ OPERANDES CONSTITUANT DE PURS INTERMEDIAIRES ------------------ */
+
+
+/* Tente une résolution de symbole. */
+static PyObject *py_target_operand_resolve(PyObject *, PyObject *);
+
+/* Renseigne la taille de la valeur indiquée à la construction. */
+static PyObject *py_target_operand_get_size(PyObject *, void *);
+
+/* Fournit les indications concernant le symbole associé. */
+static PyObject *py_target_operand_get_symbol(PyObject *, void *);
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/*                          GLUE POUR CREATION DEPUIS PYTHON                          */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : type = type du nouvel objet à mettre en place.               *
+*                args = éventuelle liste d'arguments.                         *
+*                kwds = éventuel dictionnaire de valeurs mises à disposition. *
+*                                                                             *
+*  Description : Accompagne la création d'une instance dérivée en Python.     *
+*                                                                             *
+*  Retour      : Nouvel objet Python mis en place ou NULL en cas d'échec.     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_target_operand_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    PyObject *result;                       /* Objet à retourner           */
+    PyTypeObject *base;                     /* Type de base à dériver      */
+    bool first_time;                        /* Evite les multiples passages*/
+    GType gtype;                            /* Nouveau type de processeur  */
+    bool status;                            /* Bilan d'un enregistrement   */
+
+    /* Validations diverses */
+
+    base = get_python_target_operand_type();
+
+    if (type == base)
+        goto simple_way;
+
+    /* Mise en place d'un type dédié */
+
+    first_time = (g_type_from_name(type->tp_name) == 0);
+
+    gtype = build_dynamic_type(G_TYPE_TARGET_OPERAND, type->tp_name,
+                               (GClassInitFunc)py_target_operand_init_gclass, NULL, NULL);
+
+    if (first_time)
+    {
+        status = register_class_for_dynamic_pygobject(gtype, type, base);
+
+        if (!status)
+        {
+            result = NULL;
+            goto exit;
+        }
+
+    }
+
+    /* On crée, et on laisse ensuite la main à PyGObject_Type.tp_init() */
+
+ simple_way:
+
+    result = PyType_GenericNew(type, args, kwds);
+
+ exit:
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : class  = classe à initialiser.                               *
+*                unused = données non utilisées ici.                          *
+*                                                                             *
+*  Description : Initialise la classe des descriptions de fichier binaire.    *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void py_target_operand_init_gclass(GTargetOperandClass *class, gpointer unused)
+{
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = objet à initialiser (théoriquement).                  *
+*                args = arguments fournis à l'appel.                          *
+*                kwds = arguments de type key=val fournis.                    *
+*                                                                             *
+*  Description : Initialise une instance sur la base du dérivé de GObject.    *
+*                                                                             *
+*  Retour      : 0.                                                           *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static int py_target_operand_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    MemoryDataSize size;                    /* Taille des adresses mémoire */
+    vmpa2t *addr;                           /* Emplacement de symbole      */
+    int ret;                                /* Bilan de lecture des args.  */
+    GTargetOperand *operand;                 /* Opérande à manipuler        */
+
+#define TARGET_OPERAND_DOC                                                  \
+    "The TargetOperand object translates immediate values as symbols.\n"    \
+    "\n"                                                                    \
+    "Instances can be created using the following constructor:\n"           \
+    "\n"                                                                    \
+    "    TargetOperand(size, addr)"                                         \
+    "\n"                                                                    \
+    "Where size is a pychrysalide.analysis.BinContent.MemoryDataSize value" \
+    " describing the size of memory addresses and addr is the location of"  \
+    " a symbol to target, as a pychrysalide.arch.vmpa value."
+
+    /* Récupération des paramètres */
+
+    ret = PyArg_ParseTuple(args, "O&O&", convert_to_memory_data_size, &size, convert_any_to_vmpa, &addr);
+    if (!ret) return -1;
+
+    /* Initialisation d'un objet GLib */
+
+    ret = forward_pygobjet_init(self);
+    if (ret == -1) return -1;
+
+    /* Eléments de base */
+
+    operand = G_TARGET_OPERAND(pygobject_get(self));
+
+    operand->size = size;
+    copy_vmpa(&operand->addr, addr);
+
+    clean_vmpa_arg(addr);
+
+    return 0;
+
+}
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/*                    OPERANDES CONSTITUANT DE PURS INTERMEDIAIRES                    */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = serveur à manipuler.                                  *
+*                args = arguments d'appel non utilisés ici.                   *
+*                                                                             *
+*  Description : Tente une résolution de symbole.                             *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_target_operand_resolve(PyObject *self, PyObject *args)
+{
+    PyObject *result;                       /* Bilan à retourner           */
+    GBinFormat *format;                     /* Format de binaire reconnu   */
+    int strict;                             /* Perfection attendue ?       */
+    int ret;                                /* Bilan de lecture des args.  */
+    GTargetOperand *operand;                /* Version GLib de l'opérande  */
+    bool status;                            /* Bilan de l'opération        */
+
+#define TARGET_OPERAND_RESOLVE_METHOD PYTHON_METHOD_DEF             \
+(                                                                   \
+    resolve, "$self, format, strict, /",                            \
+    METH_VARARGS, py_target_operand,                                \
+    "Try to resolve the value carried by the operand as the"        \
+    " address of an existing symbol.\n"                             \
+    "\n"                                                            \
+    "The provided format has to be a pychrysalide.format.BinFormat" \
+    " instance and the *strict* argument defines if an offset is"   \
+    " allowed between the value and the symbol's address.\n"        \
+    "\n"                                                            \
+    "The result is True if the resolution is successful, False"     \
+    " otherwise."                                                   \
+)
+
+    ret = PyArg_ParseTuple(args, "O&p", convert_to_binary_format, &format, &strict);
+    if (!ret) return NULL;
+
+    operand = G_TARGET_OPERAND(pygobject_get(self));
+
+    status = g_target_operand_resolve(operand, format, strict);
+
+    result = status ? Py_True : Py_False;
+    Py_INCREF(result);
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self    = objet Python concerné par l'appel.                 *
+*                closure = non utilisé ici.                                   *
+*                                                                             *
+*  Description : Renseigne la taille de la valeur indiquée à la construction. *
+*                                                                             *
+*  Retour      : Taille de la valeur représentée en mémoire.                  *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_target_operand_get_size(PyObject *self, void *closure)
+{
+    PyObject *result;                       /* Instance Python à retourner */
+    GTargetOperand *operand;                /* Version GLib de l'opérande  */
+    MemoryDataSize size;                    /* Taille à transmettre        */
+
+#define TARGET_OPERAND_SIZE_ATTRIB PYTHON_GET_DEF_FULL                          \
+(                                                                               \
+    size, py_target_operand,                                                    \
+    "Provide the size of the value carried by the operand.\n"                   \
+    "\n"                                                                        \
+    "The result is a pychrysalide.analysis.BinContent.MemoryDataSize value."    \
+)
+
+    operand = G_TARGET_OPERAND(pygobject_get(self));
+
+    size = g_target_operand_get_size(operand);
+
+    result = cast_with_constants_group_from_type(get_python_binary_content_type(), "MemoryDataSize", size);
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self    = objet Python concerné par l'appel.                 *
+*                closure = non utilisé ici.                                   *
+*                                                                             *
+*  Description : Fournit les indications concernant le symbole associé.       *
+*                                                                             *
+*  Retour      : Symbole résolu ou NULL si aucun.                             *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_target_operand_get_symbol(PyObject *self, void *closure)
+{
+    PyObject *result;                       /* Instance Python à retourner */
+    GTargetOperand *operand;                /* Version GLib de l'opérande  */
+    GBinSymbol *symbol;                     /* Symbole attaché à l'opérande*/
+    phys_t diff;                            /* Décalage avec la base       */
+
+#define TARGET_OPERAND_SYMBOL_ATTRIB PYTHON_GET_DEF_FULL        \
+(                                                               \
+    symbol, py_target_operand,                                  \
+    "Give the resolved symbol linked to the operand.\n"         \
+    "\n"                                                        \
+    "The result is a pychrysalide.format.BinSymbol instance"    \
+    " or None."                                                 \
+)
+
+    operand = G_TARGET_OPERAND(pygobject_get(self));
+
+    symbol = g_target_operand_get_symbol(operand, &diff);
+
+    result = pygobject_new(G_OBJECT(symbol));
+    g_object_unref(symbol);
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Fournit un accès à une définition de type à diffuser.        *
+*                                                                             *
+*  Retour      : Définition d'objet pour Python.                              *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+PyTypeObject *get_python_target_operand_type(void)
+{
+    static PyMethodDef py_target_operand_methods[] = {
+        TARGET_OPERAND_RESOLVE_METHOD,
+        { NULL }
+    };
+
+    static PyGetSetDef py_target_operand_getseters[] = {
+        TARGET_OPERAND_SIZE_ATTRIB,
+        TARGET_OPERAND_SYMBOL_ATTRIB,
+        { NULL }
+    };
+
+    static PyTypeObject py_target_operand_type = {
+
+        PyVarObject_HEAD_INIT(NULL, 0)
+
+        .tp_name        = "pychrysalide.arch.operands.TargetOperand",
+        .tp_basicsize   = sizeof(PyGObject),
+
+        .tp_flags       = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+
+        .tp_doc         = TARGET_OPERAND_DOC,
+
+        .tp_methods     = py_target_operand_methods,
+        .tp_getset      = py_target_operand_getseters,
+
+        .tp_init        = py_target_operand_init,
+        .tp_new         = py_target_operand_new,
+
+    };
+
+    return &py_target_operand_type;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : module = module dont la définition est à compléter.          *
+*                                                                             *
+*  Description : Prend en charge l'objet 'pychrysalide.arch.ArchOperand'.     *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool ensure_python_target_operand_is_registered(void)
+{
+    PyTypeObject *type;                     /* Type Python 'ArchOperand'   */
+    PyObject *module;                       /* Module à recompléter        */
+    PyObject *dict;                         /* Dictionnaire du module      */
+
+    type = get_python_target_operand_type();
+
+    if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
+    {
+        module = get_access_to_python_module("pychrysalide.arch.operands");
+
+        dict = PyModule_GetDict(module);
+
+        if (!ensure_python_targetable_operand_is_registered())
+            return false;
+
+        if (!register_class_for_pygobject(dict, G_TYPE_TARGET_OPERAND, type, get_python_arch_operand_type()))
+            return false;
+
+    }
+
+    return true;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : arg = argument quelconque à tenter de convertir.             *
+*                dst = destination des valeurs récupérées en cas de succès.   *
+*                                                                             *
+*  Description : Tente de convertir en opérande ciblant idéalement un symbole.*
+*                                                                             *
+*  Retour      : Bilan de l'opération, voire indications supplémentaires.     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+int convert_to_target_operand(PyObject *arg, void *dst)
+{
+    int result;                             /* Bilan à retourner           */
+
+    result = PyObject_IsInstance(arg, (PyObject *)get_python_target_operand_type());
+
+    switch (result)
+    {
+        case -1:
+            /* L'exception est déjà fixée par Python */
+            result = 0;
+            break;
+
+        case 0:
+            PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to target operand");
+            break;
+
+        case 1:
+            *((GTargetOperand **)dst) = G_TARGET_OPERAND(pygobject_get(arg));
+            break;
+
+        default:
+            assert(false);
+            break;
+
+    }
+
+    return result;
+
+}
diff --git a/plugins/pychrysalide/arch/operands/target.h b/plugins/pychrysalide/arch/operands/target.h
new file mode 100644
index 0000000..8463079
--- /dev/null
+++ b/plugins/pychrysalide/arch/operands/target.h
@@ -0,0 +1,48 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * target.h - prototypes pour l'équivalent Python du fichier "arch/operands/target.h"
+ *
+ * Copyright (C) 2020 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#ifndef _PLUGINS_PYCHRYSALIDE_ARCH_OPERANDS_TARGET_H
+#define _PLUGINS_PYCHRYSALIDE_ARCH_OPERANDS_TARGET_H
+
+
+#include <Python.h>
+#include <stdbool.h>
+
+
+
+/* ------------------ OPERANDES CONSTITUANT DE PURS INTERMEDIAIRES ------------------ */
+
+
+/* Fournit un accès à une définition de type à diffuser. */
+PyTypeObject *get_python_target_operand_type(void);
+
+/* Prend en charge l'objet 'pychrysalide.arch.operands.TargetOperand'. */
+bool ensure_python_target_operand_is_registered(void);
+
+/* Tente de convertir en opérande ciblant idéalement un symbole. */
+int convert_to_target_operand(PyObject *, void *);
+
+
+
+#endif  /* _PLUGINS_PYCHRYSALIDE_ARCH_OPERANDS_TARGET_H */