diff options
Diffstat (limited to 'plugins')
| -rw-r--r-- | plugins/arm/v7/post.c | 2 | ||||
| -rw-r--r-- | plugins/dalvik/post.c | 2 | ||||
| -rw-r--r-- | plugins/pychrysalide/analysis/constants.c | 58 | ||||
| -rw-r--r-- | plugins/pychrysalide/analysis/constants.h | 3 | ||||
| -rw-r--r-- | plugins/pychrysalide/arch/operands/Makefile.am | 1 | ||||
| -rw-r--r-- | plugins/pychrysalide/arch/operands/module.c | 2 | ||||
| -rw-r--r-- | plugins/pychrysalide/arch/operands/target.c | 483 | ||||
| -rw-r--r-- | plugins/pychrysalide/arch/operands/target.h | 48 |
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 */ |