PublicMirrors/MikroTikPatch
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modified: npk.py

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zyb 2024-07-20 06:53:47 +08:00
parent c4cfc235f1
commit d983d50542
1 changed files with 29 additions and 8 deletions
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37
npk.py
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@ -27,20 +27,21 @@ class NpkPartID(IntEnum):
class NpkPartItem:
id: NpkPartID
data: bytes|object
class NpkNameInfo:
_format = '<16s4sI12s'
def __init__(self,name:str,version:str,build_time=datetime.now(),_unknow=b'\x00'*12):
class NpkInfo:
_format = '<16s4sI8s'
def __init__(self,name:str,version:str,build_time=datetime.now(),unknow=b'\x00'*8):
self._name = name[:16].encode().ljust(16,b'\x00')
self._version = self.encode_version(version)
self._build_time = int(build_time.timestamp())
self._unknow = _unknow
self._unknow = unknow
def serialize(self)->bytes:
return struct.pack(self._format, self._name,self._version,self._build_time,self._unknow)
@staticmethod
def unserialize_from(data:bytes)->'NpkNameInfo':
assert len(data) == struct.calcsize(NpkNameInfo._format),'Invalid data length'
_name, _version,_build_time,_unknow = struct.unpack_from(NpkNameInfo._format,data)
return NpkNameInfo(_name.decode(),NpkNameInfo.decode_version(_version),datetime.fromtimestamp(_build_time),_unknow)
def unserialize_from(data:bytes)->'NpkInfo':
assert len(data) == struct.calcsize(NpkInfo._format),'Invalid data length'
_name, _version,_build_time,unknow= struct.unpack_from(NpkInfo._format,data)
return NpkInfo(_name.decode(),NpkInfo.decode_version(_version),datetime.fromtimestamp(_build_time),unknow)
def __len__ (self)->int:
return struct.calcsize(self._format)
@property
@ -101,6 +102,22 @@ class NpkNameInfo:
def build_time(self,value:datetime):
self._build_time = int(value.timestamp())
class NpkNameInfo(NpkInfo):
_format = '<16s4sI12s'
def __init__(self,name:str,version:str,build_time=datetime.now(),_unknow=b'\x00'*12):
self._name = name[:16].encode().ljust(16,b'\x00')
self._version = self.encode_version(version)
self._build_time = int(build_time.timestamp())
self._unknow = _unknow
def serialize(self)->bytes:
return struct.pack(self._format, self._name,self._version,self._build_time,self._unknow)
@staticmethod
def unserialize_from(data:bytes)->'NpkNameInfo':
assert len(data) == struct.calcsize(NpkNameInfo._format),'Invalid data length'
_name, _version,_build_time,_unknow = struct.unpack_from(NpkNameInfo._format,data)
return NpkNameInfo(_name.decode(),NpkNameInfo.decode_version(_version),datetime.fromtimestamp(_build_time),_unknow)
class NpkFileContainer:
_format = '<BB6sIBBBBIIIH'
@dataclass
@ -188,6 +205,8 @@ class NovaPackage(Package):
else:
if part_id == NpkPartID.NAME_INFO:
self._parts.append(NpkPartItem(NpkPartID(part_id),NpkNameInfo.unserialize_from(part_data)))
elif part_id == NpkPartID.PKG_INFO:
self._parts.append(NpkPartItem(NpkPartID(part_id),NpkInfo.unserialize_from(part_data)))
else:
self._parts.append(NpkPartItem(NpkPartID(part_id),part_data))
@ -213,6 +232,8 @@ class NovaPackage(Package):
from mikro import mikro_kcdsa_sign,mikro_eddsa_sign
build_time = os.environ['BUILD_TIME'] if 'BUILD_TIME' in os.environ else None
if len(self._packages) > 0:
if build_time:
self[NpkPartID.PKG_INFO].data._build_time = int(build_time)
for package in self._packages:
if len(package[NpkPartID.SIGNATURE].data) != 20+48+64:
package[NpkPartID.SIGNATURE].data = b'\0'*(20+48+64)