VendorHeader = c.Struct(
"_start_offset" / c.Tell,
"magic" / c.Const(b"TRZV"),
"_header_len" / c.Padding(4),
"expiry" / c.Int32ul,
"version" / c.Struct(
"major" / c.Int8ul,
"minor" / c.Int8ul,
),
"vendor_sigs_required" / c.Int8ul,
"vendor_sigs_n" / c.Rebuild(c.Int8ul, c.len_(c.this.pubkeys)),
"vendor_trust" / VendorTrust,
"reserved" / c.Padding(14),
"pubkeys" / c.Bytes(32)[c.this.vendor_sigs_n],
"vendor_string" / c.Aligned(4, c.PascalString(c.Int8ul, "utf-8")),
"vendor_image" / Toif,
"_data_end_offset" / c.Tell,
c.Padding(-(c.this._data_end_offset + 65) % 512),
"sigmask" / c.Byte,
"signature" / c.Bytes(64),
"_end_offset" / c.Tell,
"header_len" /
c.Pointer(c.this._start_offset + 4,
c.Rebuild(c.Int32ul, c.this._end_offset - c.this._start_offset)),
)
VersionLong = c.Struct(
"major" / c.Int8ul,
"minor" / c.Int8ul,
"patch" / c.Int8ul,
PermalinkBinary = construct.FocusedSeq(
"fields",
schema_version=construct.Const(_CURRENT_SCHEMA_VERSION, construct.Byte),
fields=construct.RawCopy(
construct.Aligned(
3,
construct.Struct(
header=construct.BitStruct(
has_seed_hash=construct.Rebuild(
construct.Flag, construct.this._.seed_hash != None),
bytes_rotation=construct.Rebuild(
construct.BitsInteger(7),
lambda ctx: single_byte_hash(ctx._.generator_params) >>
1,
)),
seed_hash=construct.If(construct.this.header.has_seed_hash,
construct.Bytes(5)),
randovania_version=construct.Bytes(4), # short git hash
generator_params=construct.ExprAdapter(
construct.Prefixed(construct.VarInt,
construct.GreedyBytes),
# parsing
decoder=create_rotator(inverse=True),
# building
encoder=create_rotator(inverse=False),
),
))),
permalink_checksum=construct.Checksum(
construct.Bytes(2),
lambda data: hashlib.blake2b(data, digest_size=2).digest(),
construct.this.fields.data,
)
ClassDefinition = DataPointer(
Int64ul,
Struct("hash" / Int64ul,
"members" / C.PrefixedArray(Int64ul, ClassMemberDefinition)),
"definitionData")
ClassDefinitionList = C.FocusedSeq(
"definitions", "_count" / C.Rebuild(Int32ul, C.len_(this.definitions)),
"definitions" / C.Prefixed(
Int32ul,
C.Aligned(
8,
C.FocusedSeq(
"definitions",
"definitions" / ClassDefinition[this._._count],
DataEntries("definitionData"),
DataEntries("names"),
))))
# Hierarchy handling
varcount = 0
def varHandling(this):
global varcount
ret = varcount
varcount += 1
return ret
VendorHeader = c.Struct(
"_start_offset" / c.Tell,
"magic" / c.Const(b"TRZV"),
"header_len" / c.Int32ul,
"expiry" / c.Int32ul,
"version" / c.Struct(
"major" / c.Int8ul,
"minor" / c.Int8ul,
),
"sig_m" / c.Int8ul,
"sig_n" / c.Rebuild(c.Int8ul, c.len_(c.this.pubkeys)),
"trust" / VendorTrust,
"_reserved" / c.Padding(14),
"pubkeys" / c.Bytes(32)[c.this.sig_n],
"text" / c.Aligned(4, c.PascalString(c.Int8ul, "utf-8")),
"image" / Toif,
"_end_offset" / c.Tell,
"_min_header_len" / c.Check(
c.this.header_len > (c.this._end_offset - c.this._start_offset) + 65),
"_header_len_aligned" / c.Check(c.this.header_len % 512 == 0),
c.Padding(c.this.header_len - c.this._end_offset + c.this._start_offset -
65),
"sigmask" / c.Byte,
"signature" / c.Bytes(64),
)
VersionLong = c.Struct(
"major" / c.Int8ul,
"minor" / c.Int8ul,
"patch" / c.Int8ul,
double=ord(b'd'),
fourcc=ord(b'F'),
uuid=ord(b'G'),
int64_t=ord(b'j'),
uint64_t=ord(b'J'),
Q1516=ord(b'q'),
Q3132=ord(b'Q'),
utcdate=ord(b'U'),
complex=ord(b'?'),
nested=0x0,
unknown=0xfe)
FOURCC = construct.Struct(
"key" / construct.Bytes(4), "type" / construct.Byte,
"size" / construct.Byte, "repeat" / construct.Int16ub,
"data" / construct.Aligned(
4, construct.Bytes(construct.this.size * construct.this.repeat)))
def parse_value(element):
"""Parses element value"""
type_parsed = TYPES.parse(bytes([element.type]))
#print("DEBUG: type_parsed={}, element.repeat={}, element.size={}, len(element.data): {}".format(type_parsed, element.repeat, element.size, len(element.data)))
# Special cases
if type_parsed == 'char' and element.key == b'GPSU':
return parse_goprodate(element)
if type_parsed == 'utcdate':
return parse_goprodate(element)
# Basic number types
struct_key = None
