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trezor-firmware
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protocol: python logging to supersede VerboseWire

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pull/25/head
matejcik 6 years ago
parent b7c7190573
commit eed91db880
5 changed files with 94 additions and 42 deletions
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42
trezorctl
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@ -24,12 +24,14 @@ import base64
import binascii
import click
import json
import logging
import os
import sys
from trezorlib.client import TrezorClient, TrezorClientVerbose, CallException
from trezorlib.transport import get_transport, enumerate_devices
from trezorlib import coins
from trezorlib import log
from trezorlib import messages as proto
from trezorlib import protobuf
from trezorlib import stellar
@ -64,32 +66,38 @@ CHOICE_OUTPUT_SCRIPT_TYPE = ChoiceType({
})
def enable_logging():
handler = logging.StreamHandler()
handler.setFormatter(log.PrettyProtobufFormatter())
logger = logging.getLogger('trezorlib')
logger.setLevel(logging.DEBUG)
logger.addHandler(handler)
log.OMITTED_MESSAGES.add(proto.Features)
@click.group(context_settings={'max_content_width': 400})
@click.option('-p', '--path', help='Select device by specific path.', default=os.environ.get('TREZOR_PATH'))
@click.option('-v', '--verbose', is_flag=True, help='Show communication messages.')
@click.option('-j', '--json', 'is_json', is_flag=True, help='Print result as JSON object')
@click.pass_context
def cli(ctx, path, verbose, is_json):
if ctx.invoked_subcommand != 'list':
if verbose:
cls = TrezorClientVerbose
else:
cls = TrezorClient
if verbose:
enable_logging()
def get_device():
def get_device():
try:
device = get_transport(path, prefix_search=False)
except:
try:
device = get_transport(path, prefix_search=False)
device = get_transport(path, prefix_search=True)
except:
try:
device = get_transport(path, prefix_search=True)
except:
click.echo("Failed to find a TREZOR device.")
if path is not None:
click.echo("Using path: {}".format(path))
sys.exit(1)
return cls(transport=device)
ctx.obj = get_device
click.echo("Failed to find a TREZOR device.")
if path is not None:
click.echo("Using path: {}".format(path))
sys.exit(1)
return TrezorClient(transport=device)
ctx.obj = get_device
@cli.resultcallback()

19
trezorlib/log.py
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@ -0,0 +1,19 @@
import logging
from typing import Set, Type
from . import protobuf
OMITTED_MESSAGES = set() # type: Set[Type[protobuf.MessageType]]
class PrettyProtobufFormatter(logging.Formatter):
def format(self, record):
time = self.formatTime(record)
message = '[{time}] {level}: {msg}'.format(time=time, level=record.levelname, msg=super().format(record))
if hasattr(record, 'protobuf'):
if type(record.protobuf) in OMITTED_MESSAGES:
message += " ({} bytes)".format(record.protobuf.ByteSize())
else:
message += "\n" + protobuf.format_message(record.protobuf)
return message

6
trezorlib/protobuf.py
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@ -377,4 +377,8 @@ def format_message(pb: MessageType, indent: int=0, sep: str= ' ' * 4) -> str:
return repr(value)
return pb.__class__.__name__ + ' ' + pformat_value(pb.__dict__, indent)
return '{name} ({size} bytes) {content}'.format(
name=pb.__class__.__name__,
size=pb.ByteSize(),
content=pformat_value(pb.__dict__, indent)
)

30
trezorlib/protocol_v1.py
Unescape View File

@ -19,22 +19,30 @@
from __future__ import absolute_import
from io import BytesIO
import logging
import struct
from typing import Tuple, Type
from . import mapping
from . import protobuf
from .transport import Transport
REPLEN = 64
LOG = logging.getLogger(__name__)
class ProtocolV1(object):
class ProtocolV1:
def session_begin(self, transport):
def session_begin(self, transport: Transport) -> None:
pass
def session_end(self, transport):
def session_end(self, transport: Transport) -> None:
pass
def write(self, transport, msg):
def write(self, transport: Transport, msg: protobuf.MessageType) -> None:
LOG.debug("sending message: {}".format(msg.__class__.__name__),
extra={'protobuf': msg})
data = BytesIO()
protobuf.dump_message(data, msg)
ser = data.getvalue()
@ -48,10 +56,10 @@ class ProtocolV1(object):
transport.write_chunk(chunk)
data = data[63:]
def read(self, transport):
def read(self, transport: Transport) -> protobuf.MessageType:
# Read header with first part of message data
chunk = transport.read_chunk()
(msg_type, datalen, data) = self.parse_first(chunk)
msg_type, datalen, data = self.parse_first(chunk)
# Read the rest of the message
while len(data) < datalen:
@ -63,21 +71,23 @@ class ProtocolV1(object):
# Parse to protobuf
msg = protobuf.load_message(data, mapping.get_class(msg_type))
LOG.debug("received message: {}".format(msg.__class__.__name__),
extra={'protobuf': msg})
return msg
def parse_first(self, chunk):
def parse_first(self, chunk: bytes) -> Tuple[int, int, bytes]:
if chunk[:3] != b'?##':
raise RuntimeError('Unexpected magic characters')
try:
headerlen = struct.calcsize('>HL')
(msg_type, datalen) = struct.unpack('>HL', chunk[3:3 + headerlen])
msg_type, datalen = struct.unpack('>HL', chunk[3:3 + headerlen])
except:
raise RuntimeError('Cannot parse header')
data = chunk[3 + headerlen:]
return (msg_type, datalen, data)
return msg_type, datalen, data
def parse_next(self, chunk):
def parse_next(self, chunk: bytes) -> bytes:
if chunk[:1] != b'?':
raise RuntimeError('Unexpected magic characters')
return chunk[1:]

39
trezorlib/protocol_v2.py
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@ -18,28 +18,34 @@
from __future__ import absolute_import
import struct
from io import BytesIO
from . import messages as proto
import logging
import struct
from typing import Tuple
from . import mapping
from . import protobuf
from .transport import Transport
REPLEN = 64
LOG = logging.getLogger(__name__)
class ProtocolV2(object):
class ProtocolV2:
def __init__(self):
def __init__(self) -> None:
self.session = None
def session_begin(self, transport):
def session_begin(self, transport: Transport) -> None:
chunk = struct.pack('>B', 0x03)
chunk = chunk.ljust(REPLEN, b'\x00')
transport.write_chunk(chunk)
resp = transport.read_chunk()
self.session = self.parse_session_open(resp)
LOG.debug("[session {}] session started".format(self.session))
def session_end(self, transport):
def session_end(self, transport: Transport) -> None:
if not self.session:
return
chunk = struct.pack('>BL', 0x04, self.session)
@ -49,12 +55,15 @@ class ProtocolV2(object):
(magic, ) = struct.unpack('>B', resp[:1])
if magic != 0x04:
raise RuntimeError('Expected session close')
LOG.debug("[session {}] session ended".format(self.session))
self.session = None
def write(self, transport, msg):
def write(self, transport: Transport, msg: protobuf.MessageType) -> None:
if not self.session:
raise RuntimeError('Missing session for v2 protocol')
LOG.debug("[session {}] sending message: {}".format(self.session, msg.__class__.__name__),
extra={'protobuf': msg})
# Serialize whole message
data = BytesIO()
protobuf.dump_message(data, msg)
@ -76,7 +85,7 @@ class ProtocolV2(object):
data = data[datalen:]
seq += 1
def read(self, transport):
def read(self, transport: Transport) -> protobuf.MessageType:
if not self.session:
raise RuntimeError('Missing session for v2 protocol')
@ -95,12 +104,14 @@ class ProtocolV2(object):
# Parse to protobuf
msg = protobuf.load_message(data, mapping.get_class(msg_type))
LOG.debug("[session {}] received message: {}".format(self.session, msg.__class__.__name__),
extra={'protobuf': msg})
return msg
def parse_first(self, chunk):
def parse_first(self, chunk: bytes) -> Tuple[int, int, bytes]:
try:
headerlen = struct.calcsize('>BLLL')
(magic, session, msg_type, datalen) = struct.unpack('>BLLL', chunk[:headerlen])
magic, session, msg_type, datalen = struct.unpack('>BLLL', chunk[:headerlen])
except:
raise RuntimeError('Cannot parse header')
if magic != 0x01:
@ -109,10 +120,10 @@ class ProtocolV2(object):
raise RuntimeError('Session id mismatch')
return msg_type, datalen, chunk[headerlen:]
def parse_next(self, chunk):
def parse_next(self, chunk: bytes) -> bytes:
try:
headerlen = struct.calcsize('>BLL')
(magic, session, sequence) = struct.unpack('>BLL', chunk[:headerlen])
magic, session, sequence = struct.unpack('>BLL', chunk[:headerlen])
except:
raise RuntimeError('Cannot parse header')
if magic != 0x02:
@ -121,10 +132,10 @@ class ProtocolV2(object):
raise RuntimeError('Session id mismatch')
return chunk[headerlen:]
def parse_session_open(self, chunk):
def parse_session_open(self, chunk: bytes) -> int:
try:
headerlen = struct.calcsize('>BL')
(magic, session) = struct.unpack('>BL', chunk[:headerlen])
magic, session = struct.unpack('>BL', chunk[:headerlen])
except:
raise RuntimeError('Cannot parse header')
if magic != 0x03:

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