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Reject 3MF Plate IDs Below 1 Instead of Indexing Before the Plate List

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The plate importer copied each plater_id from model_settings.config into the
1-based plate list after checking only the upper bound, so plater_id="0"
wrote to plate_data_list[-1] and crashed on load. Both copy sites now reject
ids below 1 with the same "invalid plate index" error already used for ids
past the end.
This commit is contained in:
Hanif Koh
2026-09-28 06:00:18 +08:00
parent 4964f49765
commit 72a1e3ce6b
2 changed files with 111 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libslic3r/Format/bbs_3mf.cpp
+2 -2
View File
@@ -1629,7 +1629,7 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
}
while (it != m_plater_data.end())
{
if (it->first > m_plater_data.size())
if (it->first <= 0 || static_cast<size_t>(it->first) > m_plater_data.size())
{
add_error("invalid plate index");
return false;
@@ -2312,7 +2312,7 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
}
while (it != m_plater_data.end())
{
if (it->first > m_plater_data.size())
if (it->first <= 0 || static_cast<size_t>(it->first) > m_plater_data.size())
{
add_error("invalid plate index");
return false;
tests/libslic3r/test_3mf.cpp
+109 -15
View File
@@ -19,6 +19,7 @@
#include <boost/filesystem/operations.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include <algorithm>
#include <functional>
#include <catch2/catch_tostring.hpp>
#include <Eigen/Core>
@@ -184,16 +185,13 @@ static bool read_cad_recipe_entry(const std::string& path, std::string& out,
return found;
}
// Rewrites the archive at `path` with the recipe entry back under the name it had before the
// rename, which is what every project saved by an earlier build looks like on disk. Generated
// rather than checked in because a whole project archive is not frozen evidence the way a bare
// recipe blob is -- it has to be whatever today's exporter writes, with only the name aged.
// miniz cannot rename in place and open_zip_writer truncates, so the entries are held across
// the switch.
static void rename_cad_recipe_entry_to_legacy(const std::string& path)
// Rewrites the archive at `path`, letting `edit` change the name or data of each entry; returns
// whether `edit` reported a change for any of them. miniz cannot edit in place and
// open_zip_writer truncates, so the entries are held across the switch.
static bool rewrite_3mf_entries(const std::string& path, const std::function<bool(std::string& name, std::string& data)>& edit)
{
std::vector<std::pair<std::string, std::string>> entries;
bool renamed = false;
bool changed = false;
{
mz_zip_archive zip;
mz_zip_zero_struct(&zip);
@@ -208,22 +206,118 @@ static void rename_cad_recipe_entry_to_legacy(const std::string& path)
std::string data((size_t) st.m_uncomp_size, '\0');
if (st.m_uncomp_size > 0)
REQUIRE(mz_zip_reader_extract_to_mem(&zip, i, data.data(), data.size(), 0));
if (boost::algorithm::iequals(name, CAD_RECIPE_ENTRY)) {
name = LEGACY_CAD_RECIPE_ENTRY;
renamed = true;
}
changed |= edit(name, data);
entries.emplace_back(std::move(name), std::move(data));
}
close_zip_reader(&zip);
}
// Without this the scenario would degrade silently into re-testing the new name if the
// exporter's constant ever moved again: every load below would still pass.
REQUIRE(renamed);
Zipper out(path);
for (const auto& e : entries)
out.add_entry(e.first, e.second.data(), e.second.size());
out.finalize();
return changed;
}
// Rewrites the archive at `path` with the recipe entry back under the name it had before the
// rename, which is what every project saved by an earlier build looks like on disk. Generated
// rather than checked in because a whole project archive is not frozen evidence the way a bare
// recipe blob is -- it has to be whatever today's exporter writes, with only the name aged.
static void rename_cad_recipe_entry_to_legacy(const std::string& path)
{
const bool renamed = rewrite_3mf_entries(path, [](std::string& name, std::string&) {
if (!boost::algorithm::iequals(name, CAD_RECIPE_ENTRY))
return false;
name = LEGACY_CAD_RECIPE_ENTRY;
return true;
});
// Without this the scenario would degrade silently into re-testing the new name if the
// exporter's constant ever moved again: every load below would still pass.
REQUIRE(renamed);
}
// Replaces the first occurrence of `from` in any entry whose name ends with `suffix`.
static bool replace_in_3mf_entry(const std::string& path, const std::string& suffix, const std::string& from, const std::string& to)
{
bool replaced = false;
rewrite_3mf_entries(path, [&](std::string& name, std::string& data) {
if (replaced || !boost::algorithm::ends_with(name, suffix))
return false;
if (const size_t pos = data.find(from); pos != std::string::npos) {
data.replace(pos, from.size(), to);
replaced = true;
}
return replaced;
});
return replaced;
}
// Stores a one-plate project holding a cube whose first two facets are painted Extruder2 and
// Extruder3, which the exporter writes as paint_color="8" and paint_color="0C".
static void store_painted_cube(const std::string& path)
{
Model model;
ModelObject* object = model.add_object();
ModelVolume* volume = object->add_volume(make_cube(10., 10., 10.));
object->add_instance();
{
TriangleSelector selector(volume->mesh());
selector.set_facet(0, EnforcerBlockerType::Extruder2);
selector.set_facet(1, EnforcerBlockerType::Extruder3);
REQUIRE(volume->mmu_segmentation_facets.set(selector));
}
ScopedTemporaryDir backup_dir("orca_paint_src");
model.set_backup_path(backup_dir.string());
DynamicPrintConfig cfg;
PlateData plate;
plate.plate_index = 0;
StoreParams sp;
sp.path = path.c_str();
sp.model = &model;
sp.config = &cfg;
sp.strategy = SaveStrategy::Zip64 | SaveStrategy::Silence;
sp.plate_data_list.push_back(&plate);
REQUIRE(store_bbs_3mf(sp));
}
// Loads `path` through the BBS importer into `model`, releasing the plates it returns. The
// importer stages metadata through `backup_dir`, which has to outlive the model.
static bool load_project(const std::string& path, Model& model, const ScopedTemporaryDir& backup_dir)
{
model.set_backup_path(backup_dir.string());
DynamicPrintConfig config;
ConfigSubstitutionContext ctxt{ ForwardCompatibilitySubstitutionRule::Enable };
PlateDataPtrs plates;
std::vector<Preset*> project_presets;
bool is_bbl_3mf = false, is_orca_3mf = false;
Semver file_version;
const bool loaded = load_bbs_3mf(path.c_str(), &config, &ctxt, &model, &plates, &project_presets, &is_bbl_3mf,
&is_orca_3mf, &file_version, nullptr, LoadStrategy::LoadModel | LoadStrategy::LoadConfig);
release_PlateData_list(plates);
return loaded;
}
TEST_CASE("A project with a plate id below 1 fails to load", "[3mf][Regression]")
{
const int plate_id = GENERATE(0, -1);
INFO("plater_id " << plate_id);
ScopedTemporaryFile temp(".3mf");
store_painted_cube(temp.string());
{
ScopedTemporaryDir backup_dir("orca_plate_dst");
Model model;
REQUIRE(load_project(temp.string(), model, backup_dir));
}
REQUIRE(replace_in_3mf_entry(temp.string(), "model_settings.config", "key=\"plater_id\" value=\"1\"",
"key=\"plater_id\" value=\"" + std::to_string(plate_id) + "\""));
ScopedTemporaryDir backup_dir("orca_plate_dst");
Model model;
bool loaded = true;
REQUIRE_NOTHROW(loaded = load_project(temp.string(), model, backup_dir));
REQUIRE_FALSE(loaded);
}
// The recipe lives only in the BBS-native backend, because that is the only one that runs: