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Patches: validate yml patch offset values

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This commit is contained in:
Megamouse 2023-07-11 21:52:44 +02:00
parent e8ee5831d3
commit 02bac61c9c
1 changed files with 27 additions and 0 deletions
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27
Utilities/bin_patch.cpp
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@ -703,6 +703,33 @@ bool patch_engine::add_patch_data(YAML::Node node, patch_info& info, u32 modifie
std::string error_message; std::string error_message;
// Validate offset
switch (p_data.type)
{
case patch_type::move_file:
case patch_type::hide_file:
break;
default:
{
const u32 offset = get_yaml_node_value<u32>(addr_node, error_message);
if (!error_message.empty())
{
error_message = fmt::format("Skipping patch data entry: [ %s, 0x%.8x, %s ] (key: %s, location: %s) Invalid patch offset '%s' (not a valid u32 or overflow)",
p_data.type, p_data.offset, p_data.original_value.empty() ? "?" : p_data.original_value, info.hash, get_yaml_node_location(node), p_data.original_offset);
append_log_message(log_messages, error_message, &patch_log.error);
return false;
}
if ((0xFFFFFFFF - modifier) < p_data.offset)
{
error_message = fmt::format("Skipping patch data entry: [ %s, 0x%.8x, %s ] (key: %s, location: %s) Invalid combination of patch offset 0x%.8x and modifier 0x%.8x (overflow)",
p_data.type, p_data.offset, p_data.original_value.empty() ? "?" : p_data.original_value, info.hash, get_yaml_node_location(node), p_data.offset, modifier);
append_log_message(log_messages, error_message, &patch_log.error);
return false;
}
break;
}
}
switch (p_data.type) switch (p_data.type)
{ {
case patch_type::utf8: case patch_type::utf8: