def activate(self, ctx):
hx_view = idaapi.get_widget_vdui(ctx.widget)
if not self.check(hx_view):
return
data = []
offset = hx_view.item.e.m
struct_type = idaapi.remove_pointer(hx_view.item.e.x.type)
ordinal = helper.get_ordinal(struct_type)
result = struct_xrefs.XrefStorage().get_structure_info(ordinal, offset)
for xref_info in result:
data.append([
idaapi.get_short_name(xref_info.func_ea) + "+" + hex(int(xref_info.offset)),
xref_info.type,
xref_info.line
])
field_name = helper.get_member_name(struct_type, offset)
chooser = forms.MyChoose(
data,
"Cross-references to {0}::{1}".format(struct_type.dstr(), field_name),
[["Function", 20 | idaapi.CHCOL_PLAIN],
["Type", 2 | idaapi.CHCOL_PLAIN],
["Line", 40 | idaapi.CHCOL_PLAIN]]
)
idx = chooser.Show(True)
if idx == -1:
return
xref = result[idx]
idaapi.open_pseudocode(xref.func_ea + xref.offset, False)
def visit_expr(self, expression):
# Checks if expression is reference by pointer or by value
if expression.op == idaapi.cot_memptr:
struct_type = expression.x.type.get_pointed_object()
elif expression.op == idaapi.cot_memref:
struct_type = expression.x.type
else:
return 0
# Getting information about structure, field offset, address and one line corresponding to code
ordinal = helper.get_ordinal(struct_type)
field_offset = expression.m
ea = self.__find_ref_address(expression)
usage_type = self.__get_type(expression)
if ea == idaapi.BADADDR or not ordinal:
logger.warning(
"Failed to parse at address {0}, ordinal - {1}, type - {2}".
format(helper.to_hex(ea), ordinal, struct_type.dstr()))
one_line = self.__get_line()
occurrence_offset = ea - self.__function_address
xref_info = (occurrence_offset, one_line, usage_type)
# Saving results
if ordinal not in self.__result:
self.__result[ordinal] = {field_offset: [xref_info]}
elif field_offset not in self.__result[ordinal]:
self.__result[ordinal][field_offset] = [xref_info]
else:
self.__result[ordinal][field_offset].append(xref_info)
return 0