// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// Mobius Forensic Toolkit
// Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021 Eduardo Aguiar
//
// This program 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 2, or (at your option) any later
// version.
//
// This program 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, see <http://www.gnu.org/licenses/>.
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \file turing.cc C++ API <i>mobius.turing.turing</i> class wrapper
//! \author Eduardo Aguiar
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#include <pymobius.h>
#include "turing.h"
#include "module.h"
#include "database/transaction.h"

namespace
{
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Create tuple from hash
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
PyTuple_from_hash (const std::tuple <std::string, std::string, std::string>& row)
{
  PyObject *ret = PyTuple_New (3);

  if (ret)
    {
      PyTuple_SetItem (ret, 0, PyString2_from_std_string (std::get <0> (row)));
      PyTuple_SetItem (ret, 1, PyString2_from_std_string (std::get <1> (row)));
      PyTuple_SetItem (ret, 2, PyString2_from_std_string (std::get <2> (row)));
    }

  return ret;
}

} // namespace

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Create <i>turing</i> Python object from C++ object
//! \param obj C++ object
//! \return New turing object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PyObject *
PyMobius_Turing_Turing_from_cpp (mobius::turing::turing obj)
{
  PyObject *ret = _PyObject_New (&turing_turing_t);

  if (ret)
    ((turing_turing_o *) ret)->obj = new mobius::turing::turing (obj);

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>has_hash</i> method implementation
//! \param self Object
//! \param args Argument list
//! \return True/False
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_has_hash (turing_turing_o *self, PyObject *args)
{
  // parse input args
  std::string arg_type;
  std::string arg_value;

  try
    {
      arg_type = mobius::py::get_arg_as_std_string (args, 0);
      arg_value = mobius::py::get_arg_as_std_string (args, 1);
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_TypeError, e.what ());
      return nullptr;
    }

  // execute C++ function
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pybool_from_bool (self->obj->has_hash (arg_type, arg_value));
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  // return value
  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>set_hash</i> method implementation
//! \param self object
//! \param args argument list
//! \return new hash object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_set_hash (turing_turing_o *self, PyObject *args)
{
  // parse input args
  std::string arg_type;
  std::string arg_value;
  std::string arg_password;

  try
    {
      arg_type = mobius::py::get_arg_as_std_string (args, 0);
      arg_value = mobius::py::get_arg_as_std_string (args, 1);
      arg_password = mobius::py::get_arg_as_std_string (args, 2);
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_TypeError, e.what ());
      return nullptr;
    }

  // execute C++ function
  PyObject *ret = nullptr;

  try
    {
      self->obj->set_hash (arg_type, arg_value, arg_password);
      ret = mobius::py::pynone ();
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  // return value
  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>get_hash_password</i> method implementation
//! \param self Object
//! \param args Argument list
//! \return status, password
//
// status: 0 - not found
//         1 - found
//         2 - LM first half found
//         3 - LM second half found
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_get_hash_password (turing_turing_o *self, PyObject *args)
{
  // parse input args
  std::string arg_type;
  std::string arg_value;

  try
    {
      arg_type = mobius::py::get_arg_as_std_string (args, 0);
      arg_value = mobius::py::get_arg_as_std_string (args, 1);
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_TypeError, e.what ());
      return nullptr;
    }

  // execute C++ function
  PyObject *ret = nullptr;

  try
    {
      auto p = self->obj->get_hash_password (arg_type, arg_value);
      ret = PyTuple_New (2);

      if (ret)
        {
          PyTuple_SetItem (ret, 0, PyLong_FromLong (static_cast <int> (p.first)));

          if (p.first == mobius::turing::turing::pwd_status::not_found)
            PyTuple_SetItem (ret, 1, mobius::py::pynone ());

          else
            PyTuple_SetItem (ret, 1, PyString2_from_std_string (p.second));
        }
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  // return value
  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>remove_hashes</i> method implementation
//! \param self object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_remove_hashes (turing_turing_o *self, PyObject *)
{
  // execute C++ function
  PyObject *ret = nullptr;

  try
    {
      self->obj->remove_hashes ();
      ret = mobius::py::pynone ();
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>get_hashes</i> method implementation
//! \param self object
//! \param args argument list
//! \return hash list
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_get_hashes (turing_turing_o *self, PyObject *)
{
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pylist_from_cpp_container (
               self->obj->get_hashes (),
               PyTuple_from_hash
            );
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>new_transaction</i> method implementation
//! \param self object
//! \param args argument list
//! \return new transaction object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_new_transaction (turing_turing_o *self, PyObject *)
{
  // execute C++ function
  PyObject *ret = nullptr;

  try
    {
      ret = PyMobius_Database_Transaction_from_cpp (self->obj->new_transaction ());
    }
  catch (const std::exception& e)
    {
      PyErr_SetString (PyExc_Exception, e.what ());
    }

  // return value
  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Methods structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyMethodDef tp_methods[] =
{
  {
    (char *) "has_hash",
    (PyCFunction) tp_f_has_hash,
    METH_VARARGS,
    "Check if hash is set"
  },
  {
    (char *) "set_hash",
    (PyCFunction) tp_f_set_hash,
    METH_VARARGS,
    "Set hash type, value and password"
  },
  {
    (char *) "get_hash_password",
    (PyCFunction) tp_f_get_hash_password,
    METH_VARARGS,
    "Get password for a given hash"
  },
  {
    (char *) "remove_hashes",
    (PyCFunction) tp_f_remove_hashes,
    METH_VARARGS,
    "Remove all hashes from database"
  },
  {
    (char *) "get_hashes",
    (PyCFunction) tp_f_get_hashes,
    METH_VARARGS,
    "get all hashes from database"
  },
  {
    (char *) "new_transaction",
    (PyCFunction) tp_f_new_transaction,
    METH_VARARGS,
    "create new transaction"
  },
  {NULL, NULL, 0, NULL} // sentinel
};

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>turing</i> constructor
//! \param type type object
//! \param args argument list
//! \param kwds keywords dict
//! \return new <i>turing</i> object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_new (PyTypeObject *type, PyObject *, PyObject *)
{
  turing_turing_o *self = (turing_turing_o *) type->tp_alloc (type, 0);

  if (self)
    self->obj = new mobius::turing::turing ();

  return (PyObject *) self;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>turing</i> deallocator
//! \param self object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static void
tp_dealloc (turing_turing_o *self)
{
  delete self->obj;
  self->ob_type->tp_free ((PyObject*) self);
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Type structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PyTypeObject turing_turing_t =
{
  PyVarObject_HEAD_INIT (NULL, 0)
  "mobius.turing.turing",        			// tp_name
  sizeof (turing_turing_o),      			// tp_basicsize
  0,                                       		// tp_itemsize
  (destructor) tp_dealloc,                 		// tp_dealloc
  0,                                       		// tp_print
  0,                                       		// tp_getattr
  0,                                       		// tp_setattr
  0,                                       		// tp_compare
  0,                                       		// tp_repr
  0,                                       		// tp_as_number
  0,                                       		// tp_as_sequence
  0,                                       		// tp_as_mapping
  0,                                       		// tp_hash
  0,                                       		// tp_call
  0,                                       		// tp_str
  0,                                       		// tp_getattro
  0,                                       		// tp_setattro
  0,                                       		// tp_as_buffer
  Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,		// tp_flags
  "turing class",                          		// tp_doc
  0,                                       		// tp_traverse
  0,                                       		// tp_clear
  0,                                       		// tp_richcompare
  0,                                       		// tp_weaklistoffset
  0,                                       		// tp_iter
  0,                                       		// tp_iternext
  tp_methods,                              		// tp_methods
  0,                                       		// tp_members
  0,                                       		// tp_getset
  0,                                       		// tp_base
  0,                                       		// tp_dict
  0,                                       		// tp_descr_get
  0,                                       		// tp_descr_set
  0,                                       		// tp_dictoffset
  0,                                       		// tp_init
  0,                                       		// tp_alloc
  tp_new,                                  		// tp_new
  0,                                       		// tp_free
  0,                                       		// tp_is_gc
  0,                                       		// tp_bases
  0,                                       		// tp_mro
  0,                                       		// tp_cache
  0,                                       		// tp_subclasses
  0,                                       		// tp_weaklist
  0,                                       		// tp_del
  0,                                       		// tp_version_tag
};
