269 lines
9.0 KiB
Python
269 lines
9.0 KiB
Python
from toxcore_enums_and_consts import TOX_FILE_KIND, TOX_FILE_CONTROL
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from os.path import basename, getsize, exists
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from os import remove, rename
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from time import time, sleep
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from tox import Tox
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import settings
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from PySide import QtCore
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TOX_FILE_TRANSFER_STATE = {
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'RUNNING': 0,
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'PAUSED': 1,
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'CANCELED': 2,
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'FINISHED': 3,
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'PAUSED_BY_FRIEND': 4
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}
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class StateSignal(QtCore.QObject):
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signal = QtCore.Signal(int, float) # state and progress
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class FileTransfer(QtCore.QObject):
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"""
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Superclass for file transfers
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"""
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def __init__(self, path, tox, friend_number, size, file_number=None):
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QtCore.QObject.__init__(self)
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self._path = path
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self._tox = tox
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self._friend_number = friend_number
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self.state = TOX_FILE_TRANSFER_STATE['RUNNING']
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self._file_number = file_number
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self._creation_time = time()
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self._size = float(size)
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self._done = 0
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self._state_changed = StateSignal()
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def set_tox(self, tox):
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self._tox = tox
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def set_state_changed_handler(self, handler):
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self._state_changed.signal.connect(handler)
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def signal(self):
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self._state_changed.signal.emit(self.state, self._done / self._size if self._size else 0)
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def get_file_number(self):
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return self._file_number
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def get_friend_number(self):
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return self._friend_number
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def cancel(self):
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self.send_control(TOX_FILE_CONTROL['CANCEL'])
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if hasattr(self, '_file'):
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self._file.close()
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self._state_changed.signal.emit(self.state, 1)
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def cancelled(self):
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if hasattr(self, '_file'):
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sleep(0.1)
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self._file.close()
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self.state = TOX_FILE_TRANSFER_STATE['CANCELED']
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self._state_changed.signal.emit(self.state, 1)
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def pause(self, by_friend):
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if not by_friend:
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self.send_control(TOX_FILE_CONTROL['PAUSE'])
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else:
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self.state = TOX_FILE_TRANSFER_STATE['PAUSED_BY_FRIEND']
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self.signal()
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def send_control(self, control):
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if self._tox.file_control(self._friend_number, self._file_number, control):
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self.state = control
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self.signal()
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def get_file_id(self):
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return self._tox.file_get_file_id(self._friend_number, self._file_number)
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# -----------------------------------------------------------------------------------------------------------------
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# Send file
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# -----------------------------------------------------------------------------------------------------------------
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class SendTransfer(FileTransfer):
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def __init__(self, path, tox, friend_number, kind=TOX_FILE_KIND['DATA'], file_id=None):
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if path is not None:
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self._file = open(path, 'rb')
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size = getsize(path)
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else:
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size = 0
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super(SendTransfer, self).__init__(path, tox, friend_number, size)
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self._file_number = tox.file_send(friend_number, kind, size, file_id,
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basename(path).encode('utf-8') if path else '')
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def send_chunk(self, position, size):
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"""
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Send chunk
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:param position: start position in file
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:param size: chunk max size
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"""
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if size:
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self._file.seek(position)
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data = self._file.read(size)
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self._tox.file_send_chunk(self._friend_number, self._file_number, position, data)
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self._done += size
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self.signal()
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else:
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if hasattr(self, '_file'):
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self._file.close()
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self.state = TOX_FILE_TRANSFER_STATE['FINISHED']
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self._state_changed.signal.emit(self.state, 1)
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class SendAvatar(SendTransfer):
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"""
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Send avatar to friend. Doesn't need file transfer item
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"""
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def __init__(self, path, tox, friend_number):
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if path is None:
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hash = None
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else:
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with open(path, 'rb') as fl:
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hash = Tox.hash(fl.read())
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super(SendAvatar, self).__init__(path, tox, friend_number, TOX_FILE_KIND['AVATAR'], hash)
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class SendFromBuffer(FileTransfer):
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"""
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Send inline image
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"""
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def __init__(self, tox, friend_number, data, file_name):
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super(SendFromBuffer, self).__init__(None, tox, friend_number, len(data))
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self._data = data
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self._file_number = tox.file_send(friend_number, TOX_FILE_KIND['DATA'], len(data), None, file_name)
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def get_data(self):
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return self._data
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def send_chunk(self, position, size):
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if size:
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data = self._data[position:position + size]
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self._tox.file_send_chunk(self._friend_number, self._file_number, position, data)
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self._done += size
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self._state_changed.signal.emit(self.state, self._done / self._size)
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else:
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self.state = TOX_FILE_TRANSFER_STATE['FINISHED']
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self._state_changed.signal.emit(self.state, 1)
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# -----------------------------------------------------------------------------------------------------------------
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# Receive file
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# -----------------------------------------------------------------------------------------------------------------
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class ReceiveTransfer(FileTransfer):
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def __init__(self, path, tox, friend_number, size, file_number):
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super(ReceiveTransfer, self).__init__(path, tox, friend_number, size, file_number)
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self._file = open(self._path, 'wb')
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self._file.truncate(0)
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self._file_size = 0
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def cancel(self):
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super(ReceiveTransfer, self).cancel()
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remove(self._path)
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def write_chunk(self, position, data):
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"""
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Incoming chunk
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:param position: position in file to save data
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:param data: raw data (string)
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"""
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if data is None:
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self._file.close()
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self.state = TOX_FILE_TRANSFER_STATE['FINISHED']
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self._state_changed.signal.emit(self.state, 1)
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else:
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data = ''.join(chr(x) for x in data)
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if self._file_size < position:
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self._file.seek(0, 2)
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self._file.write('\0' * (position - self._file_size))
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self._file.seek(position)
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self._file.write(data)
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self._file.flush()
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l = len(data)
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if position + l > self._file_size:
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self._file_size = position + l
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self._done += l
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self._state_changed.signal.emit(self.state, self._done / self._size)
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class ReceiveToBuffer(FileTransfer):
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"""
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Inline image - save in buffer not in file system
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"""
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def __init__(self, tox, friend_number, size, file_number):
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super(ReceiveToBuffer, self).__init__(None, tox, friend_number, size, file_number)
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self._data = ''
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self._data_size = 0
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def get_data(self):
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return self._data
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def write_chunk(self, position, data):
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if data is None:
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self.state = TOX_FILE_TRANSFER_STATE['FINISHED']
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self._state_changed.signal.emit(self.state, 1)
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else:
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data = ''.join(chr(x) for x in data)
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l = len(data)
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if self._data_size < position:
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self._data += ('\0' * (position - self._data_size))
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self._data = self._data[:position] + data + self._data[position + l:]
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if position + l > self._data_size:
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self._data_size = position + l
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self._done += l
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self.signal()
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class ReceiveAvatar(ReceiveTransfer):
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"""
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Get friend's avatar. Doesn't need file transfer item
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"""
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MAX_AVATAR_SIZE = 512 * 1024
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def __init__(self, tox, friend_number, size, file_number):
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path = settings.ProfileHelper.get_path() + 'avatars/{}.png'.format(tox.friend_get_public_key(friend_number))
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super(ReceiveAvatar, self).__init__(path + '.tmp', tox, friend_number, size, file_number)
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if size > self.MAX_AVATAR_SIZE:
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self.send_control(TOX_FILE_CONTROL['CANCEL'])
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remove(path + '.tmp')
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elif exists(path):
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if not size:
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self.send_control(TOX_FILE_CONTROL['CANCEL'])
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self.state = TOX_FILE_TRANSFER_STATE['CANCELED']
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self._file.close()
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remove(path)
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remove(path + '.tmp')
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else:
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hash = self.get_file_id()
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with open(path) as fl:
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data = fl.read()
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existing_hash = Tox.hash(data)
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if hash == existing_hash:
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self.send_control(TOX_FILE_CONTROL['CANCEL'])
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self.state = TOX_FILE_TRANSFER_STATE['CANCELED']
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remove(path + '.tmp')
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else:
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self.send_control(TOX_FILE_CONTROL['RESUME'])
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else:
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self.send_control(TOX_FILE_CONTROL['RESUME'])
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def write_chunk(self, position, data):
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super(ReceiveAvatar, self).write_chunk(position, data)
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if self.state:
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avatar_path = self._path[:-4]
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if exists(avatar_path):
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remove(avatar_path)
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rename(self._path, avatar_path)
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