def packet_content_to_packet_bytes(version, type_, data):
data_length = len(data)
packet_type = type_
tag = 0x80
result = bytearray()
if version >= 4:
# "An implementation MAY use Partial Body Lengths for data packets, be
# they literal, compressed, or encrypted."
remaining = data_length
offset = 0
while remaining:
allow_partial = type_ in (8, 9, 11, 18)
tag += 0x40 + packet_type
result = bytearray([tag])
packet_length_bytes, remaining = utils.new_packet_length_to_bytes(
data_length, allow_partial)
result.extend(packet_length_bytes)
result.extend(data[offset:-remaining])
offset = data_length - remaining
else:
tag += (packet_type << 2)
result = bytearray([tag])
result.extend(utils.old_packet_length_to_bytes(data_length))
result.extend(data)
return result
def packet_content_to_packet_bytes(version, type_, data):
data_length = len(data)
packet_type = type_
tag = 0x80
result = bytearray()
if version >= 4:
# "An implementation MAY use Partial Body Lengths for data packets, be
# they literal, compressed, or encrypted."
remaining = data_length
offset = 0
while remaining:
allow_partial = type_ in (8, 9, 11, 18)
tag += 0x40 + packet_type
result = bytearray([tag])
packet_length_bytes, remaining = utils.new_packet_length_to_bytes(
data_length,
allow_partial)
result.extend(packet_length_bytes)
result.extend(data[offset:-remaining])
offset = data_length - remaining
else:
tag += (packet_type << 2)
result = bytearray([tag])
result.extend(utils.old_packet_length_to_bytes(data_length))
result.extend(data)
return result
def __bytes__(self):
data = self.content
result = bytearray()
# +1 for sub type
result.extend(utils.new_packet_length_to_bytes(
len(data) + 1, False)[0])
result.append(self.sub_type)
result.extend(data)
return bytes(result)
def subpacket_to_bytes(subpacket):
data_len = len(subpacket['data']) + 1 # For the type
result = bytearray()
packet_length_bytes, _ = utils.new_packet_length_to_bytes(data_len, False)
result.extend(packet_length_bytes)
raw = subpacket['type'] + (0x80 if subpacket['critical'] else 0x00)
result.append(raw)
result.extend(subpacket['data'])
return result
def subpacket_to_bytes(subpacket):
data_len = len(subpacket['data']) + 1 # For the type
result = bytearray()
packet_length_bytes, _ = utils.new_packet_length_to_bytes(data_len, False)
result.extend(packet_length_bytes)
raw = subpacket['type'] + (0x80 if subpacket['critical'] else 0x00)
result.append(raw)
result.extend(subpacket['data'])
return result
def __bytes__(self):
data = self.content
result = bytearray()
# +1 for sub type
result.extend(
utils.new_packet_length_to_bytes(len(data) + 1, False)[0])
result.append(self.sub_type)
result.extend(data)
return bytes(result)
def __bytes__(self):
data = self.content
data_len = len(data) + 1 # For the type
result = bytearray()
packet_length_bytes, _ = utils.new_packet_length_to_bytes(data_len, False)
result.extend(packet_length_bytes)
raw = self.type + (0x80 if self.critical else 0x00)
result.append(raw)
result.extend(data)
return bytes(result)
def user_attribute_to_bytes(packet):
result = bytearray()
for subpacket in packet['subpackets']:
sub_data = user_attribute_subpacket_to_bytes(subpacket)
packet_length_bytes, _ = utils.new_packet_length_to_bytes(
len(sub_data), allow_partial=False)
result.extend(packet_length_bytes)
result.append(subpacket['subtype'])
result.extend(sub_data)
return result
def __bytes__(self):
data = self.content
data_len = len(data) + 1 # For the type
result = bytearray()
packet_length_bytes, _ = \
utils.new_packet_length_to_bytes(data_len, False)
result.extend(packet_length_bytes)
raw = self.type + (0x80 if self.critical else 0x00)
result.append(raw)
result.extend(data)
return bytes(result)
def user_attribute_to_bytes(packet):
result = bytearray()
for subpacket in packet['subpackets']:
sub_data = user_attribute_subpacket_to_bytes(subpacket)
packet_length_bytes, _ = utils.new_packet_length_to_bytes(
len(sub_data),
allow_partial=False)
result.extend(packet_length_bytes)
result.append(subpacket['subtype'])
result.extend(sub_data)
return result
