# DEX Structures -----------------
Header = Entry.create('Header',[
['magic', 8, BinData],
['checksum', 4, BinHex],
['signature', 20, BinData],
['file_size', 4, BinInt],
['header_size', 4, BinInt],
['endian_tag', 4, BinHex],
['link_size', 4, BinInt],
['link_off', 4, BinHex],
['map_off', 4, BinHex],
['string_ids_size', 4, BinInt],
['string_ids_off', 4, BinHex],
['type_ids_size', 4, BinInt],
['type_ids_off', 4, BinHex],
['proto_ids_size', 4, BinInt],
['proto_ids_off', 4, BinHex],
['field_ids_size', 4, BinInt],
['field_ids_off', 4, BinHex],
['method_ids_size', 4, BinInt],
['method_ids_off', 4, BinHex],
['class_defs_size', 4, BinInt],
['class_defs_off', 4, BinHex],
['data_size', 4, BinInt],
['data_off', 4, BinHex],
])
MapItem = Entry.create('MapItem',[
['type', 2, BinMapType],
elif self.value_type == 0x1d:
self.value = EncodedAnnotation(bstream)
elif self.value_type == 0x1f:
self.value = (self.value_arg == 0)
elif self.value_type in [
0x00, 0x02, 0x03, 0x04, 0x06, 0x10, 0x11, 0x17, 0x18, 0x19,
0x1a, 0x1b
]:
self.value = BinData(self.value_arg + 1)
self.value.init_data(bstream.read(self.value_arg + 1))
def blob(self):
raise ("Implement me!")
AnnotationElement = Entry.create('AnnotationElement', [
['name_idx', 1, ULEB128],
['value', 1, EncodedValue],
])
EncodedAnnotation = Entry.create('EncodedAnnotation', [
['type_idx', 1, ULEB128],
['size', 1, ULEB128],
['elements', 'size', EntryList, AnnotationElement],
])
EncodedArray = Entry.create('EncodedArray', [
['size', 1, ULEB128],
['values', 'size', EntryList, EncodedValue],
])
def uleb128_to_int(self):
value = 0
for b in reversed(self.value.data):
value = value * 128 + (b & 0x7F)
return value
def uleb128p1_to_int(self):
value = 0
for b in reversed(self.value.data):
value = value * 128 + (b & 0x7F)
return value-1
def sleb128_to_int(self):
value = 0
for b in reversed(self.value.data):
value = value * 128 + (b & 0x7F)
if self.value.data[-1] & 0x40 != 0:
value = value | ~((1 << (len(self.value.data)*7))-1)
return value
# LEB128 Structures
ULEB128 = Entry.create('ULEB128',[['value', len_leb128, BinData],])
ULEB128.__int__ = uleb128_to_int
ULEB128P1 = Entry.create('ULEB128P1',[['value', len_leb128, BinData],])
ULEB128P1.__int__ = uleb128p1_to_int
SLEB128 = Entry.create('SLEB128',[['value', len_leb128, BinData],])
SLEB128.__int__ = sleb128_to_int
for b in reversed(self.value.data):
value = value * 128 + (b & 0x7F)
return value - 1
def sleb128_to_int(self):
value = 0
for b in reversed(self.value.data):
value = value * 128 + (b & 0x7F)
if self.value.data[-1] & 0x40 != 0:
value = value | ~((1 << (len(self.value.data) * 7)) - 1)
return value
# LEB128 Structures
ULEB128 = Entry.create('ULEB128', [
['value', len_leb128, BinData],
])
ULEB128.__int__ = uleb128_to_int
ULEB128P1 = Entry.create('ULEB128P1', [
['value', len_leb128, BinData],
])
ULEB128P1.__int__ = uleb128p1_to_int
SLEB128 = Entry.create('SLEB128', [
['value', len_leb128, BinData],
])
SLEB128.__int__ = sleb128_to_int
if self.value_type == 0x1c:
self.value = EncodedArray(bstream)
elif self.value_type == 0x1d:
self.value = EncodedAnnotation(bstream)
elif self.value_type == 0x1f:
self.value = (self.value_arg == 0)
elif self.value_type in [0x00,0x02,0x03,0x04,0x06,0x10,
0x11,0x17,0x18,0x19,0x1a,0x1b]:
self.value = BinData(self.value_arg+1)
self.value.init_data(bstream.read(self.value_arg+1))
def blob(self):
raise("Implement me!")
AnnotationElement = Entry.create('AnnotationElement',[
['name_idx', 1, ULEB128],
['value', 1, EncodedValue],
])
EncodedAnnotation = Entry.create('EncodedAnnotation',[
['type_idx', 1, ULEB128],
['size', 1, ULEB128],
['elements', 'size', EntryList, AnnotationElement],
])
EncodedArray = Entry.create('EncodedArray',[
['size', 1, ULEB128],
['values', 'size', EntryList, EncodedValue],
])