Method CheckInterMethodIdItem

Bcore/src/main/cpp/dex/dex_file_verifier.cc:2204–2249

}

bool DexFileVerifier::CheckInterMethodIdItem() {
  const DexFile::MethodId* item = reinterpret_cast<const DexFile::MethodId*>(ptr_);

  // Check that the class descriptor is a valid reference name.
  LOAD_STRING_BY_TYPE(class_descriptor, item->class_idx_, "inter_method_id_item class_idx")
  if (UNLIKELY(!IsValidDescriptor(class_descriptor) || (class_descriptor[0] != 'L' &&
                                                        class_descriptor[0] != '['))) {
    ErrorStringPrintf("Invalid descriptor for class_idx: '%s'", class_descriptor);
    return false;
  }

  // Check that the name is valid.
  LOAD_STRING(descriptor, item->name_idx_, "inter_method_id_item name_idx")
  if (UNLIKELY(!IsValidMemberName(descriptor))) {
    ErrorStringPrintf("Invalid method name: '%s'", descriptor);
    return false;
  }

  // Check that the proto id is valid.
  if (UNLIKELY(!CheckIndex(item->proto_idx_, dex_file_->NumProtoIds(),
                           "inter_method_id_item proto_idx"))) {
    return false;
  }

  // Check ordering between items. This relies on the other sections being in order.
  if (previous_item_ != nullptr) {
    const DexFile::MethodId* prev_item = reinterpret_cast<const DexFile::MethodId*>(previous_item_);
    if (UNLIKELY(prev_item->class_idx_ > item->class_idx_)) {
      ErrorStringPrintf("Out-of-order method_ids");
      return false;
    } else if (prev_item->class_idx_ == item->class_idx_) {
      if (UNLIKELY(prev_item->name_idx_ > item->name_idx_)) {
        ErrorStringPrintf("Out-of-order method_ids");
        return false;
      } else if (prev_item->name_idx_ == item->name_idx_) {
        if (UNLIKELY(prev_item->proto_idx_ >= item->proto_idx_)) {
          ErrorStringPrintf("Out-of-order method_ids");
          return false;
        }
      }
    }
  }

  ptr_ += sizeof(DexFile::MethodId);
  return true;
}

bool DexFileVerifier::CheckInterClassDefItem() {
  const DexFile::ClassDef* item = reinterpret_cast<const DexFile::ClassDef*>(ptr_);