def define_cfstrings_plugin(view: BinaryView):
log_debug("define_cfstrings_plugin")
from_bytes = _get_from_bytes(view)
cfstring_type = view.get_type_by_name('CFString')
if cfstring_type is None:
cfstring_type = view.platform.parse_types_from_source(
_cfstring_definition).types['CFString']
view.define_user_type('CFString', cfstring_type)
wchar_type = view.platform.parse_types_from_source(
_wchar_definition).types['wchar']
cfstring = Type.named_type_from_type('CFString', cfstring_type)
__cfstring = view.get_section_by_name('__cfstring')
if __cfstring is None:
return
buffer = cfstring_type.structure['buffer']
length = cfstring_type.structure['length']
for addr in range(__cfstring.start, __cfstring.end, cfstring_type.width):
view.define_user_data_var(addr, cfstring)
for xref in view.get_data_refs(addr):
view.define_user_data_var(xref, Type.pointer(view.arch, cfstring))
string_pointer = from_bytes(
view.read(addr + buffer.offset, buffer.type.width))
string_length = from_bytes(
view.read(addr + length.offset, length.type.width), ) + 1
string_section = view.get_sections_at(string_pointer)
if not string_section:
return
if string_section[0].name == '__ustring':
char_type = wchar_type
else:
char_type = Type.char()
view.define_user_data_var(string_pointer,
Type.array(char_type, string_length))
def _define_protocols(view: BinaryView):
__objc_protorefs = view.get_section_by_name('__objc_protorefs')
if __objc_protorefs is None:
return
protocol_t = Type.named_type_from_type('protocol_t',
view.get_type_by_name('protocol_t'))
for address in range(__objc_protorefs.start, __objc_protorefs.end,
view.address_size):
view.define_user_data_var(address, Type.pointer(view.arch, protocol_t))
protocol_ptr = int.from_bytes(
view.read(address, view.address_size),
"little" if view.endianness is Endianness.LittleEndian else "big")
new_protocol = Protocol.from_address(protocol_ptr, view)
