def export(self, path=None, node_id=None):
nodes = self.get_files()
if node_id:
node = nodes[node_id]
else:
node = self.find(path)
node_data = self._node_data(node)
is_file_node = node_data['t'] == 0
if is_file_node:
return self._export_file(node)
if node:
try:
# If already exported
return self.get_folder_link(node)
except (RequestError, KeyError):
pass
master_key_cipher = AES.new(a32_to_str(self.master_key), AES.MODE_ECB)
ha = base64_url_encode(
master_key_cipher.encrypt(node_data['h'].encode("utf8") +
node_data['h'].encode("utf8")))
share_key = secrets.token_bytes(16)
ok = base64_url_encode(master_key_cipher.encrypt(share_key))
share_key_cipher = AES.new(share_key, AES.MODE_ECB)
node_key = node_data['k']
encrypted_node_key = base64_url_encode(
share_key_cipher.encrypt(a32_to_str(node_key)))
node_id = node_data['h']
request_body = [{
'a':
's2',
'n':
node_id,
's': [{
'u': 'EXP',
'r': 0
}],
'i':
self.request_id,
'ok':
ok,
'ha':
ha,
'cr': [[node_id], [node_id], [0, 0, encrypted_node_key]]
}]
self._api_request(request_body)
nodes = self.get_files()
return self.get_folder_link(nodes[node_id])
def _login_process(self, resp, password):
encrypted_master_key = base64_to_a32(resp['k'])
self.master_key = decrypt_key(encrypted_master_key, password)
if 'tsid' in resp:
tsid = base64_url_decode(resp['tsid'])
key_encrypted = a32_to_str(
encrypt_key(str_to_a32(tsid[:16]), self.master_key))
if key_encrypted == tsid[-16:]:
self.sid = resp['tsid']
elif 'csid' in resp:
encrypted_rsa_private_key = base64_to_a32(resp['privk'])
rsa_private_key = decrypt_key(encrypted_rsa_private_key,
self.master_key)
private_key = a32_to_str(rsa_private_key)
self.rsa_private_key = [0, 0, 0, 0]
for i in range(4):
l = int(
((private_key[0]) * 256 + (private_key[1]) + 7) / 8) + 2
self.rsa_private_key[i] = mpi_to_int(private_key[:l])
private_key = private_key[l:]
encrypted_sid = mpi_to_int(base64_url_decode(resp['csid']))
rsa_decrypter = RSA.construct(
(self.rsa_private_key[0] * self.rsa_private_key[1], 257,
self.rsa_private_key[2], self.rsa_private_key[0],
self.rsa_private_key[1]))
sid = '%x' % rsa_decrypter._decrypt(encrypted_sid)
sid = binascii.unhexlify('0' + sid if len(sid) % 2 else sid)
self.sid = base64_url_encode(sid[:43])
def _mkdir(self, name, parent_node_id):
# generate random aes key (128) for folder
ul_key = [random.randint(0, 0xFFFFFFFF) for _ in range(6)]
# encrypt attribs
attribs = {'n': name}
encrypt_attribs = base64_url_encode(encrypt_attr(attribs, ul_key[:4]))
encrypted_key = a32_to_base64(encrypt_key(ul_key[:4], self.master_key))
# update attributes
data = self._api_request({
'a':
'p',
't':
parent_node_id,
'n': [{
'h': 'xxxxxxxx',
't': 1,
'a': encrypt_attribs,
'k': encrypted_key
}],
'i':
self.request_id
})
return data
def rename(self, file, new_name):
file = file[1]
# create new attribs
attribs = {'n': new_name}
# encrypt attribs
encrypt_attribs = base64_url_encode(encrypt_attr(attribs, file['k']))
encrypted_key = a32_to_base64(encrypt_key(file['key'],
self.master_key))
# update attributes
return self._api_request([{
'a': 'a',
'attr': encrypt_attribs,
'key': encrypted_key,
'n': file['h'],
'i': self.request_id
}])
def login_anonymous(self):
logger.info('Logging in anonymous temporary user...')
master_key = [random.randint(0, 0xFFFFFFFF)] * 4
password_key = [random.randint(0, 0xFFFFFFFF)] * 4
session_self_challenge = [random.randint(0, 0xFFFFFFFF)] * 4
user = self._api_request({
'a':
'up',
'k':
a32_to_base64(encrypt_key(master_key, password_key)),
'ts':
base64_url_encode(
a32_to_str(session_self_challenge) +
a32_to_str(encrypt_key(session_self_challenge, master_key)))
})
resp = self._api_request({'a': 'us', 'user': user})
if isinstance(resp, int):
raise RequestError(resp)
self._login_process(resp, password_key)
def import_public_file(self,
file_handle,
file_key,
dest_node=None,
dest_name=None):
"""
Import the public file into user account
"""
# Providing dest_node spare an API call to retrieve it.
if dest_node is None:
# Get '/Cloud Drive' folder no dest node specified
dest_node = self.get_node_by_type(2)[1]
# Providing dest_name spares an API call to retrieve it.
if dest_name is None:
pl_info = self.get_public_file_info(file_handle, file_key)
dest_name = pl_info['name']
key = base64_to_a32(file_key)
k = (key[0] ^ key[4], key[1] ^ key[5], key[2] ^ key[6],
key[3] ^ key[7])
encrypted_key = a32_to_base64(encrypt_key(key, self.master_key))
encrypted_name = base64_url_encode(encrypt_attr({'n': dest_name}, k))
return self._api_request({
'a':
'p',
't':
dest_node['h'],
'n': [{
'ph': file_handle,
't': 0,
'a': encrypted_name,
'k': encrypted_key
}]
})
def _login_user(self, email, password):
logger.info('Logging in user...')
email = email.lower()
get_user_salt_resp = self._api_request({'a': 'us0', 'user': email})
user_salt = None
try:
user_salt = base64_to_a32(get_user_salt_resp['s'])
except KeyError:
# v1 user account
password_aes = prepare_key(str_to_a32(password))
user_hash = stringhash(email, password_aes)
else:
# v2 user account
pbkdf2_key = hashlib.pbkdf2_hmac(hash_name='sha512',
password=password.encode(),
salt=a32_to_str(user_salt),
iterations=100000,
dklen=32)
password_aes = str_to_a32(pbkdf2_key[:16])
user_hash = base64_url_encode(pbkdf2_key[-16:])
resp = self._api_request({'a': 'us', 'user': email, 'uh': user_hash})
if isinstance(resp, int):
raise RequestError(resp)
self._login_process(resp, password_aes)
def progress_upload(self, filename, dest=None, dest_filename=None): # pylint: disable=R0914,R0915
"""
Custom upload method with nicer progress
"""
logger = logging.getLogger(__name__)
# determine storage node
if dest is None:
# if none set, upload to cloud drive node
if not hasattr(self, 'root_id'):
self.get_files()
dest = self.root_id
# request upload url, call 'u' method
with open(filename, 'rb') as input_file:
file_size = os.path.getsize(filename)
ul_url = self._api_request({'a': 'u', 's': file_size})['p']
# generate random aes key (128) for file
ul_key = [random.randint(0, 0xFFFFFFFF) for _ in range(6)]
k_str = a32_to_str(ul_key[:4])
count = Counter.new(
128, initial_value=((ul_key[4] << 32) + ul_key[5]) << 64
)
aes = AES.new(k_str, AES.MODE_CTR, counter=count)
upload_progress = 0
completion_file_handle = None
mac_str = '\0' * 16
mac_encryptor = AES.new(
k_str, AES.MODE_CBC, mac_str.encode("utf8")
)
iv_str = a32_to_str([ul_key[4], ul_key[5], ul_key[4], ul_key[5]])
if file_size > 0:
pbar = tqdm.tqdm(total=file_size, unit="b", unit_scale=True, unit_divisor=1024)
for chunk_start, chunk_size in get_chunks(file_size):
chunk = input_file.read(chunk_size)
upload_progress += len(chunk)
encryptor = AES.new(k_str, AES.MODE_CBC, iv_str)
for i in range(0, len(chunk) - 16, 16):
block = chunk[i:i + 16]
encryptor.encrypt(block)
# fix for files under 16 bytes failing
if file_size > 16:
i += 16
else:
i = 0
block = chunk[i:i + 16]
if len(block) % 16:
block += makebyte('\0' * (16 - len(block) % 16))
mac_str = mac_encryptor.encrypt(encryptor.encrypt(block))
# encrypt file and upload
chunk = aes.encrypt(chunk)
output_file = requests.post(
ul_url + "/" + str(chunk_start),
data=chunk,
timeout=self.timeout
)
completion_file_handle = output_file.text
pbar.update(len(chunk))
pbar.close()
else:
output_file = requests.post(
ul_url + "/0", data='', timeout=self.timeout
)
completion_file_handle = output_file.text
logger.info('Chunks uploaded')
logger.info('Setting attributes to complete upload')
logger.info('Computing attributes')
file_mac = str_to_a32(mac_str)
# determine meta mac
meta_mac = (file_mac[0] ^ file_mac[1], file_mac[2] ^ file_mac[3])
dest_filename = dest_filename or os.path.basename(filename)
attribs = {'n': dest_filename}
encrypt_attribs = base64_url_encode(
encrypt_attr(attribs, ul_key[:4])
)
key = [
ul_key[0] ^ ul_key[4], ul_key[1] ^ ul_key[5],
ul_key[2] ^ meta_mac[0], ul_key[3] ^ meta_mac[1], ul_key[4],
ul_key[5], meta_mac[0], meta_mac[1]
]
encrypted_key = a32_to_base64(encrypt_key(key, self.master_key))
logger.info('Sending request to update attributes')
# update attributes
data = self._api_request(
{
'a': 'p',
't': dest,
'i': self.request_id,
'n': [
{
'h': completion_file_handle,
't': 0,
'a': encrypt_attribs,
'k': encrypted_key
}
]
}
)
logger.info('Upload complete')
return data