mbirth/gcd-parser
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Various new TLV field types found in various firmwares.

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This commit is contained in:
Markus Birth 2019-06-28 20:33:25 +02:00
parent 8038182736
commit d47f21475e
Signed by: mbirth
GPG Key ID: A9928D7A098C3A9A
2 changed files with 24 additions and 6 deletions
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1
grmn/gcd.py
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@ -5,6 +5,7 @@ from .chksum import ChkSum
from .tlv import TLV, TLV6, TLV7, TLVbinary
from struct import unpack
import configparser
import sys
GCD_SIG = b"G\x41RM\x49Nd\00"
DEFAULT_COPYRIGHT = b"Copyright 1996-2017 by G\x61rm\x69n Ltd. or its subsidiaries."

29
grmn/tlv.py
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@ -3,6 +3,7 @@
from . import devices
from binascii import hexlify, unhexlify
from struct import pack, unpack
import sys
TLV_TYPES = {
0x0001: "Checksum rectifier",
@ -17,28 +18,44 @@ TLV_TYPES = {
0x0505: "Binary Region 05 (main firmware)",
0x0510: "Binary Region 10 (logo)",
0x051b: "Binary Region 1b",
0x052b: "Binary Region 2b",
0x0533: "Binary Region 33 (dskimg)",
0x0549: "Binary Region 49",
0x0555: "Binary Region 55 (fw)",
0x0556: "Binary Region 56",
0x0557: "Binary Region 57",
0x0566: "Binary Region 66 (files.bin)",
0x057f: "Binary Region 7f (resources)",
0x0588: "Binary Region 88",
0x0590: "Binary Region 90",
0x0595: "Binary Region 95",
0x0599: "Binary Region 99",
0x059e: "Binary Region 9e (resources)",
0x07d1: "Binary ???",
0x07d2: "Binary ???",
0x07d3: "Binary ???",
0x05a2: "Binary Region a2",
0x05ab: "Binary Region ab",
0x05f5: "Binary Region f5",
0x05f9: "Binary Region f9",
0x05fa: "Binary Region fa",
0x05fb: "Binary Region fb",
0x05fc: "Binary Region fc",
0x05fd: "Binary Region fd",
0x05fe: "Binary Region fe",
0x07d1: "Binary 07d1",
0x07d2: "Binary 07d2",
0x07d3: "Binary 07d3",
0xffff: "EOF marker",
}
BINARY_TLVS = [0x0008, 0x02bd, 0x0505, 0x0510, 0x0533, 0x0555, 0x0557, 0x0566, 0x057f, 0x059e, 0x07d1, 0x07d2, 0x07d3]
BINARY_TLVS = [ 0x0008, 0x02bd, 0x0505, 0x0510, 0x051b, 0x052b, 0x0533, 0x0549, 0x0555, 0x0556,
0x0557, 0x0566, 0x057f, 0x0588, 0x0590, 0x0595, 0x0599, 0x059e, 0x05a2, 0x05ab,
0x05f5, 0x05f9, 0x05fa, 0x05fb, 0x05fc, 0x05fd, 0x05fe, 0x07d1, 0x07d2, 0x07d3 ]
class TLV:
def __init__(self, type_id: int, expected_length: int, value=None, offset: int=None):
self.type_id = type_id
self.is_binary = False
self.offset = offset
self.comment = TLV_TYPES.get(type_id, "Type {:04x} / {:d}".format(type_id, type_id))
self.comment = TLV_TYPES.get(type_id, RED + "Type {:04x} / {:d}".format(type_id, type_id) + RESET)
self.length = expected_length
self.value = None
self.is_parsed = False
@ -387,7 +404,7 @@ class TLVbinary0401(TLVbinary):
txt += "\n - hw_id: 0x{:04x} / {:d} ({})".format(hwid, hwid, devices.DEVICES.get(hwid, "Unknown device"))
txt += "\n - Version: 0x{:04x} / {:d}".format(version, version)
else:
txt = "Unknown header format (0x{:04x} / 0x{:04x})".format(hdr1, hdr2)
txt += "\n - Unknown header format (0x{:04x} / 0x{:04x})".format(hdr1, hdr2)
#if not self.is_parsed:
# self.parse()
return txt