# Copyright (c) 2015-2020 Vector 35 Inc
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.


from __future__ import absolute_import
import atexit
import sys
import ctypes
from time import gmtime
import os


from binaryninja.compatibility import *


# Binary Ninja components
import binaryninja._binaryninjacore as core

from binaryninja.enums import *
from binaryninja.databuffer import *
from binaryninja.filemetadata import *
from binaryninja.fileaccessor import *
from binaryninja.binaryview import *
from binaryninja.transform import *
from binaryninja.architecture import *
from binaryninja.basicblock import *
from binaryninja.function import *
from binaryninja.log import *
from binaryninja.lowlevelil import *
from binaryninja.mediumlevelil import *
from binaryninja.highlevelil import *
from binaryninja.types import *
from binaryninja.typelibrary import *
from binaryninja.functionrecognizer import *
from binaryninja.update import *
from binaryninja.plugin import *
from binaryninja.callingconvention import *
from binaryninja.platform import *
from binaryninja.demangle import *
from binaryninja.mainthread import *
from binaryninja.interaction import *
from binaryninja.lineardisassembly import *
from binaryninja.highlight import *
from binaryninja.scriptingprovider import *
from binaryninja.downloadprovider import *
from binaryninja.pluginmanager import *
from binaryninja.settings import *
from binaryninja.metadata import *
from binaryninja.flowgraph import *
from binaryninja.datarender import *


def shutdown():
	"""
	``shutdown`` cleanly shuts down the core, stopping all workers and closing all log files.
	"""
	core.BNShutdown()


atexit.register(shutdown)


def get_unique_identifier():
	return core.BNGetUniqueIdentifierString()


def get_install_directory():
	"""
	``get_install_directory`` returns a string pointing to the installed binary currently running

	..warning:: ONLY for use within the Binary Ninja UI, behavior is undefined and unreliable if run headlessly
	"""
	return core.BNGetInstallDirectory()


_plugin_api_name = "python{}".format(sys.version_info.major)


class PluginManagerLoadPluginCallback(object):
	"""Callback for BNLoadPluginForApi("python{version}", ...), dynamically loads python plugins."""
	def __init__(self):
		self.cb = ctypes.CFUNCTYPE(
			ctypes.c_bool,
			ctypes.c_char_p,
			ctypes.c_char_p,
			ctypes.c_bool,
			ctypes.c_void_p)(self._load_plugin)

	def _load_plugin(self, repo_path, plugin_path, force, ctx):
		try:
			repo_path = repo_path.decode("utf-8")
			plugin_path = plugin_path.decode("utf-8")
			repo = RepositoryManager()[repo_path]
			plugin = repo[plugin_path]

			if not force and _plugin_api_name not in plugin.api:
				raise ValueError("Plugin API name is not " + _plugin_api_name)

			if not force and core.core_platform not in plugin.install_platforms:
				raise ValueError("Current platform {} ins't in list of valid platforms for this plugin {}".format(
					core.core_platform, plugin.install_platforms))
			if not plugin.installed:
				plugin.installed = True

			plugin_full_path = os.path.join(repo.full_path, plugin.path)
			if repo.full_path not in sys.path:
				sys.path.append(repo.full_path)
			if plugin_full_path not in sys.path:
				sys.path.append(plugin_full_path)

			__import__(plugin_path)
			return True
		except KeyError:
			log_error("Failed to find python plugin: {}/{}".format(repo_path, plugin_path))
		except ImportError as ie:
			log_error("Failed to import python plugin: {}/{}: {}".format(repo_path, plugin_path, ie))
		return False


load_plugin = PluginManagerLoadPluginCallback()
core.BNRegisterForPluginLoading(_plugin_api_name, load_plugin.cb, 0)


class _DestructionCallbackHandler(object):
	def __init__(self):
		self._cb = core.BNObjectDestructionCallbacks()
		self._cb.context = 0
		self._cb.destructBinaryView = self._cb.destructBinaryView.__class__(self.destruct_binary_view)
		self._cb.destructFileMetadata = self._cb.destructFileMetadata.__class__(self.destruct_file_metadata)
		self._cb.destructFunction = self._cb.destructFunction.__class__(self.destruct_function)
		core.BNRegisterObjectDestructionCallbacks(self._cb)

	def destruct_binary_view(self, ctxt, view):
		BinaryView._unregister(view)

	def destruct_file_metadata(self, ctxt, f):
		FileMetadata._unregister(f)

	def destruct_function(self, ctxt, func):
		Function._unregister(func)


_plugin_init = False


def _init_plugins():
	global _plugin_init
	if not _plugin_init:
		core.BNInitCorePlugins()
		if not os.environ.get('BN_DISABLE_USER_PLUGINS'):
			core.BNInitUserPlugins()
		core.BNInitRepoPlugins()
	if core.BNIsLicenseValidated():
		_plugin_init = True
	else:
		raise RuntimeError("License is not valid. Please supply a valid license.")


_destruct_callbacks = _DestructionCallbackHandler()

def bundled_plugin_path():
	"""
		``bundled_plugin_path`` returns a string containing the current plugin path inside the `install path <https://docs.binary.ninja/getting-started.html#binary-path>`_

		:return: current bundled plugin path
		:rtype: str, or None on failure
	"""
	return core.BNGetBundledPluginDirectory()

def user_plugin_path():
	"""
		``user_plugin_path`` returns a string containing the current plugin path inside the `user directory <https://docs.binary.ninja/getting-started.html#user-folder>`_

		:return: current user plugin path
		:rtype: str, or None on failure
	"""
	return core.BNGetUserPluginDirectory()

def core_version():
	"""
		``core_version`` returns a string containing the current version

		:return: current version
		:rtype: str, or None on failure
	"""
	return core.BNGetVersionString()

def core_build_id():
	"""
		``core_build_id`` returns a integer containing the current build id

		:return: current build id
		:rtype: int
	"""
	return core.BNGetBuildId()

def core_serial():
	"""
		``core_serial`` returns a string containing the current serial number

		:return: current serial
		:rtype: str, or None on failure
	"""
	return core.BNGetSerialNumber()

def core_expires():
	'''License Expiration'''
	return gmtime(core.BNGetLicenseExpirationTime())

def core_product():
	'''Product string from the license file'''
	return core.BNGetProduct()

def core_product_type():
	'''Product type from the license file'''
	return core.BNGetProductType()

def core_license_count():
	'''License count from the license file'''
	return core.BNGetLicenseCount()

def core_ui_enabled():
	'''Indicates that a UI exists and the UI has invoked BNInitUI'''
	return core.BNIsUIEnabled()


def core_set_license(licenseData):
	'''Set the Binary Ninja license data, an alternative to storing a ``license.dat`` file'''
	core.BNSetLicense(licenseData)


def get_memory_usage_info():
	count = ctypes.c_ulonglong()
	info = core.BNGetMemoryUsageInfo(count)
	result = {}
	for i in range(0, count.value):
		result[info[i].name] = info[i].value
	core.BNFreeMemoryUsageInfo(info, count.value)
	return result