lief-project-LIEF/api/python/Abstract/objects/pyParser.cpp

/* Copyright 2017 - 2021 R. Thomas
 * Copyright 2017 - 2021 Quarkslab
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include "pyAbstract.hpp"

#include "LIEF/Abstract/Parser.hpp"

#include <string>
#include <stdexcept>

namespace LIEF {
template<>
void create<Parser>(py::module& m) {

  m.def("parse",
      [] (py::bytes bytes, const std::string& name) {
        std::string raw_str = bytes;
        std::vector<uint8_t> raw = {
          std::make_move_iterator(std::begin(raw_str)),
          std::make_move_iterator(std::end(raw_str))
        };
        std::unique_ptr<Binary> binary;
        std::exception_ptr ep;
        Py_BEGIN_ALLOW_THREADS
        try {
          binary = Parser::parse(std::move(raw), name);
        } catch (...) {
          ep = std::current_exception();
        }
        Py_END_ALLOW_THREADS
        if (ep) std::rethrow_exception(ep);
        return binary;
      },
      R"delim(
      Parse a binary supported by LIEF from the given bytes and return either:

      - :class:`lief.ELF.Binary`
      - :class:`lief.PE.Binary`
      - :class:`lief.MachO.Binary`

      depending on the given binary format.
      )delim",
      "raw"_a, "name"_a = "",
      py::return_value_policy::take_ownership);

  m.def("parse",
      [] (const std::string& filepath) {
        std::unique_ptr<Binary> binary;
        std::exception_ptr ep;
        Py_BEGIN_ALLOW_THREADS
        try {
          binary = Parser::parse(filepath);
        } catch (...) {
          ep = std::current_exception();
        }
        Py_END_ALLOW_THREADS
        if (ep) std::rethrow_exception(ep);
        return binary;
      },
      R"delim(
      Parse a binary from the given file path and return either:

      - :class:`lief.ELF.Binary`
      - :class:`lief.PE.Binary`
      - :class:`lief.MachO.Binary`

      depending on the given binary format.
      )delim",
      "filepath"_a,
      py::return_value_policy::take_ownership);

  m.def("parse",
      [](const std::vector<uint8_t>& raw, const std::string& name) {
        std::unique_ptr<Binary> binary;
        std::exception_ptr ep;
        Py_BEGIN_ALLOW_THREADS
        try {
          binary = Parser::parse(raw, name);
        } catch (...) {
          ep = std::current_exception();
        }
        Py_END_ALLOW_THREADS
        if (ep) std::rethrow_exception(ep);
        return binary;
      },
      R"delim(
      Parse a binary supported by LIEF from the given list of bytes and return either:

      - :class:`lief.ELF.Binary`
      - :class:`lief.PE.Binary`
      - :class:`lief.MachO.Binary`

      depending on the given binary format.
      )delim",
      "raw"_a, "name"_a = "",
      py::return_value_policy::take_ownership);



  m.def("parse",
      [] (py::object byteio, const std::string& name) {
        const auto& io = py::module::import("io");
        const auto& RawIOBase = io.attr("RawIOBase");
        const auto& BufferedIOBase = io.attr("BufferedIOBase");
        const auto& TextIOBase = io.attr("TextIOBase");

        py::object rawio;


        if (py::isinstance(byteio, RawIOBase)) {
          rawio = byteio;
        }

        else if (py::isinstance(byteio, BufferedIOBase)) {
          rawio = byteio.attr("raw");
        }

        else if (py::isinstance(byteio, TextIOBase)) {
          rawio = byteio.attr("buffer").attr("raw");
        }

        else {
          throw py::type_error(py::repr(byteio).cast<std::string>().c_str());
        }

        std::string raw_str = static_cast<py::bytes>(rawio.attr("readall")());
        std::vector<uint8_t> raw = {
          std::make_move_iterator(std::begin(raw_str)),
          std::make_move_iterator(std::end(raw_str))
        };

        std::unique_ptr<Binary> binary;
        std::exception_ptr ep;
        Py_BEGIN_ALLOW_THREADS
        try {
          binary = Parser::parse(std::move(raw), name);
        } catch (...) {
          ep = std::current_exception();
        }
        Py_END_ALLOW_THREADS
        if (ep) std::rethrow_exception(ep);
        return binary;
      },
      R"delim(
      Parse a binary supported by LIEF from the given Python IO interface and return either:

      - :class:`lief.ELF.Binary`
      - :class:`lief.PE.Binary`
      - :class:`lief.MachO.Binary`

      depending on the given binary format.
      )delim",
      "io"_a, "name"_a = "",
      py::return_value_policy::take_ownership);
}
}