/* Chrysalide - Outil d'analyse de fichiers binaires * format.c - équivalent Python du fichier "plugins/elf/format.c" * * Copyright (C) 2017-2019 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 "format.h" #include #include #include #include #include #include #include #include "constants.h" #include "dynamic.h" #include "elf_def.h" #include "program.h" #include "section.h" #include "translate.h" #include "../format.h" /* Crée un nouvel objet Python de type 'ElfFormat'. */ static PyObject *py_elf_format_new(PyTypeObject *, PyObject *, PyObject *); /* Fournit l'en-tête Elf correspondant au format. */ static PyObject *py_elf_format_get_header(PyObject *, PyObject *); /****************************************************************************** * * * Paramètres : type = type de l'objet à instancier. * * args = arguments fournis à l'appel. * * kwds = arguments de type key=val fournis. * * * * Description : Crée un nouvel objet Python de type 'ElfFormat'. * * * * Retour : Instance Python mise en place. * * * * Remarques : - * * * ******************************************************************************/ static PyObject *py_elf_format_new(PyTypeObject *type, PyObject *args, PyObject *kwds) { PyObject *result; /* Instance à retourner */ GBinContent *content; /* Instance GLib du contenu */ int ret; /* Bilan de lecture des args. */ GExeFormat *format; /* Création GLib à transmettre */ ret = PyArg_ParseTuple(args, "O&", convert_to_binary_content, &content); if (!ret) return NULL; format = g_elf_format_new(content); if (format == NULL) { result = Py_None; Py_INCREF(result); } else { result = pygobject_new(G_OBJECT(format)); g_object_unref(format); } return result; } /****************************************************************************** * * * Paramètres : self = contenu binaire à manipuler. * * args = argument non utilisé ici. * * * * Description : Fournit l'en-tête Elf correspondant au format. * * * * Retour : Structure Python créée pour l'occasion. * * * * Remarques : - * * * ******************************************************************************/ static PyObject *py_elf_format_get_header(PyObject *self, PyObject *args) { PyObject *result; /* Trouvaille à retourner */ GElfFormat *format; /* Version GLib du format */ format = G_ELF_FORMAT(pygobject_get(self)); result = translate_elf_header_to_python(format, g_elf_format_get_header(format)); return result; } /****************************************************************************** * * * Paramètres : - * * * * Description : Fournit un accès à une définition de type à diffuser. * * * * Retour : Définition d'objet pour Python. * * * * Remarques : - * * * ******************************************************************************/ PyTypeObject *get_python_elf_format_type(void) { static PyMethodDef py_elf_format_methods[] = { { "get_header", py_elf_format_get_header, METH_NOARGS, "get_header($self, /)\n--\n\nGet the Elf header." }, { "find_program_by_index", py_elf_format_find_program_by_index, METH_VARARGS, "find_program_by_index($self, index, /)\n--\n\nFind a segment using a given index." }, { "find_program_by_type", py_elf_format_find_program_by_type, METH_VARARGS, "find_program_by_type($self, type, /)\n--\n\nFind a segment using a given type." }, { "find_section_by_index", py_elf_format_find_section_by_index, METH_VARARGS, "find_section_by_index($self, index, /)\n--\n\nFind a section using a given index." }, { "find_section_by_name", py_elf_format_find_section_by_name, METH_VARARGS, "find_section_by_name($self, name, /)\n--\n\nFind a section using a given name." }, { "find_section_by_virtual_address", py_elf_format_find_section_by_virtual_address, METH_VARARGS, "find_section_by_virtual_address($self, addr, /)\n--\n\nFind a section using a given virtual address." }, { "find_sections_by_type", py_elf_format_find_sections_by_type, METH_VARARGS, "find_sections_by_type($self, type, /)\n--\n\nFind sections using a given type." }, { "find_dynamic_item_by_index", py_elf_format_find_dynamic_item_by_index, METH_VARARGS, "find_dynamic_item_by_index($self, index, /)\n--\n\nFind an item from the dynamic segment using a given index." }, { "find_dynamic_item_by_type", py_elf_format_find_dynamic_item_by_type, METH_VARARGS, "find_dynamic_item_by_type($self, type, /)\n--\n\nFind an item from the dynamic segment using a given type." }, { NULL } }; static PyGetSetDef py_elf_format_getseters[] = { { "sizeof_hdr", py_elf_format_get_sizeof_hdr, NULL, "Provide the size of Elf_Ehdr structures for the loaded format.", NULL }, { "sizeof_phdr", py_elf_format_get_sizeof_phdr, NULL, "Provide the size of Elf_Phdr structures for the loaded format.", NULL }, { "sizeof_shdr", py_elf_format_get_sizeof_shdr, NULL, "Provide the size of Elf_Shdr structures for the loaded format.", NULL }, { "sizeof_dyn", py_elf_format_get_sizeof_dyn, NULL, "Provide the size of Elf_Dyn structures for the loaded format.", NULL }, { "sizeof_sym", py_elf_format_get_sizeof_sym, NULL, "Provide the size of Elf_Sym structures for the loaded format.", NULL }, { "sizeof_rel", py_elf_format_get_sizeof_rel, NULL, "Provide the size of Elf_Rel structures for the loaded format.", NULL }, { "needed", py_elf_format_get_needed, NULL, "Provide the list of requiered shared objects.", NULL }, { NULL } }; static PyTypeObject py_elf_format_type = { PyVarObject_HEAD_INIT(NULL, 0) .tp_name = "pychrysalide.format.elf.ElfFormat", .tp_basicsize = sizeof(PyGObject), .tp_flags = Py_TPFLAGS_DEFAULT, .tp_doc = "PyChrysalide Elf format", .tp_methods = py_elf_format_methods, .tp_getset = py_elf_format_getseters, .tp_new = py_elf_format_new }; return &py_elf_format_type; } /****************************************************************************** * * * Paramètres : module = module dont la définition est à compléter. * * * * Description : Prend en charge l'objet 'pychrysalide.format.elf.ElfFormat'. * * * * Retour : Bilan de l'opération. * * * * Remarques : - * * * ******************************************************************************/ bool register_python_elf_format(PyObject *module) { PyTypeObject *py_elf_format_type; /* Type Python 'ElfFormat' */ PyObject *dict; /* Dictionnaire du module */ py_elf_format_type = get_python_elf_format_type(); dict = PyModule_GetDict(module); if (!register_class_for_pygobject(dict, G_TYPE_ELF_FORMAT, py_elf_format_type, get_python_executable_format_type())) return false; if (!define_python_elf_format_constants(py_elf_format_type)) return false; return true; }