def write_nvitem(self, item, data):
rawdata = bytes(data)
while len(rawdata) < 128:
rawdata += b"\x00"
status = 0x0000
nvrequest = b"\x27" + write_object(nvitem_type, item, rawdata,
status)['raw_data']
res = self.send(nvrequest)
if len(res) > 0:
if res[0] == 0x27:
res, nvitem = self.read_nvitem(item)
if res == False:
print(f"Error while writing nvitem {hex(item)} data, %s" %
data)
else:
if nvitem.data != data:
print(
f"Error while writing nvitem {hex(item)} data, verified data doesn't match"
)
else:
print(f"Successfully wrote nvitem {hex(item)}.")
return True
return False
else:
print(f"Error while writing nvitem {hex(item)} data, %s" %
data)
def read_nvitem(self, item):
rawdata = 128 * b'\x00'
status = 0x0000
nvrequest = b'\x26' + write_object(nvitem_type, item, rawdata,
status)['raw_data']
data = self.send(nvrequest)
if len(data) == 0:
data = self.send(nvrequest)
if len(data) > 0:
if data[0] == 0x26:
res = read_object(data[1:], nvitem_type)
name = ""
if item in self.nvlist:
name = self.nvlist[item]
data = bytearray()
for byte in res["rawdata"]:
if byte == 0:
break
data.append(byte)
res = nvitem(res["item"], data, res["status"], name)
return [True, res]
elif data[0] == 0x14:
return [
False, f"Error 0x14 trying to read nvitem {hex(item)}."
]
else:
return [
False,
f"Error {hex(data[0])} trying to read nvitem {hex(item)}."
]
return [False, f"Empty request for nvitem {hex(item)}"]
def write_nvitem(self, item, data):
rawdata = bytes(data)
if len(data) < 128:
rawdata += b"\x00"
status = 0x0000
nvrequest = b"\x27" + write_object(nvitem_type, item, rawdata, status)
res = self.send(nvrequest)
# verify res status result here... todo
res, nvitem = self.read_nvitem(item)
if res == False:
print(f"Error while writing nvitem {hex(item)} data, %s" % nvitem)
else:
if nvitem.data != data:
print(
f"Error while writing nvitem {hex(item)} data, verified data doesn't match"
)
else:
return True
return False
def read_nvitemsub(self, item, index):
rawdata = 128 * b'\x00'
status = 0x0000
nvrequest = b'\x4B\x30\x01\x00' + write_object(subnvitem_type, item, index, rawdata, status)['raw_data']
data = self.send(nvrequest)
if len(data) == 0:
data = self.send(nvrequest)
if len(data) > 0:
if data[0] == 0x4B:
res = read_object(data[4:], subnvitem_type)
name = ""
if item in self.nvlist:
name = self.nvlist[item]
data=self.unpackdata(res["rawdata"])
res = nvitem(res["item"], index, data, res["status"], name)
return [True, res]
elif data[0] == 0x14:
return [False, f"Error 0x14 trying to read nvitem {hex(item)}."]
else:
return [False, f"Error {hex(data[0])} trying to read nvitem {hex(item)}."]
return [False, f"Empty request for nvitem {hex(item)}"]
def todata(self):
data = write_object(self.magic1, self.magic2, self.fact_version,
self.version, self.block_size, self.page_size,
self.block_count, self.space_limit,
self.upper_data)
return data
def todata(self):
data = write_object(self.def_fs_factimage_read_info, self.stream_state,
self.info_cluster_sent, self.cluster_map_seqno,
self.cluster_data_seqno)
return data
