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RPC value typecasting method

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This commit is contained in:
Jiang Yio 2023-04-25 19:37:22 -04:00
parent eb5e861441
commit 24291804a2
1 changed files with 16 additions and 7 deletions
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23
rpc.py
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@ -17,7 +17,16 @@ class RPCExcAuth(RPCExc): pass
class RPCExcServerError(RPCExc): pass
class RPCExcInvalidResult(RPCExc): pass
class MReference(str): pass
class RPCType(object):
LITERAL = b'0'
REFERENCE = b'1'
LIST = b'2'
GLOBAL = b'3'
EMPTY = b'4'
STREAM = b'5'
def __init__(self, value, magic=None):
self.magic = magic
self.value = value.value if isinstance(value, RPCType) else value
RecordServerInfo = namedtuple('RecordServerInfo', ('server', 'volume', 'uci', 'device', 'attempts', 'skip_signon_screen', 'domain', 'production'))
@ -27,20 +36,20 @@ def s_pack(value: Any, encoding: str='latin-1'):
return bytes((len(encoded),)) + encoded
raise ValueError('cannot s-pack string longer than 255 bytes: ' + repr(value))
def l_pack(value: Any, envelope: int=3, wrapped: bool=True, basictype=b'0', encoding: str='latin-1'):
def l_pack(value: Any, envelope: int=3, wrapped: bool=True, magic=None, encoding: str='latin-1'):
if isinstance(value, dict):
bare = b't'.join(l_pack(k, envelope=envelope, wrapped=False, encoding=encoding) + l_pack(v, envelope=envelope, wrapped=False, encoding=encoding) for k, v in value.items())
return (b'2' + bare + b'f') if wrapped else bare
return ((magic or b'2') + bare + b'f') if wrapped else bare
elif not isinstance(value, str) and hasattr(value, '__iter__'):
bare = b't'.join(l_pack(k, envelope=envelope, wrapped=False, encoding=encoding) + l_pack(v, envelope=envelope, wrapped=False, encoding=encoding) for k, v in enumerate(value, start=1))
return (b'2' + bare + b'f') if wrapped else bare
elif isinstance(value, MReference):
return l_pack(str(value), envelope=envelope, basictype=b'1', encoding=encoding)
return ((magic or b'2') + bare + b'f') if wrapped else bare
elif isinstance(value, RPCType):
return l_pack(value.value, envelope=envelope, magic=value.magic, encoding=encoding)
else:
encoded = str(value).encode(encoding)
if len(encoded) <= 10**envelope - 1:
bare = str(len(encoded)).zfill(envelope).encode(encoding) + encoded
return (basictype + bare + b'f') if wrapped else bare
return ((magic or b'0') + bare + b'f') if wrapped else bare
raise ValueError(f'cannot l-pack string longer than {10**envelope - 1} bytes with an envelope of {envelope}: ' + repr(value))
def l_pack_maxlen(value: Any, encoding: str='latin-1'):