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Prevent run of out-of-install executable in secure context.

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SEC-257 | CURA-8968
This commit is contained in:
Remco Burema 2022-06-01 14:26:44 +02:00
parent c33a2b66cc
commit d35c862bb8
1 changed files with 14 additions and 9 deletions
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23
plugins/CuraEngineBackend/CuraEngineBackend.py
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@ -60,7 +60,7 @@ class CuraEngineBackend(QObject, Backend):
executable_name = "CuraEngine"
if Platform.isWindows():
executable_name += ".exe"
default_engine_location = executable_name
self._default_engine_location = executable_name
search_path = [
os.path.abspath(os.path.dirname(sys.executable)),
@ -74,29 +74,29 @@ class CuraEngineBackend(QObject, Backend):
for path in search_path:
engine_path = os.path.join(path, executable_name)
if os.path.isfile(engine_path):
default_engine_location = engine_path
self._default_engine_location = engine_path
break
if Platform.isLinux() and not default_engine_location:
if Platform.isLinux() and not self._default_engine_location:
if not os.getenv("PATH"):
raise OSError("There is something wrong with your Linux installation.")
for pathdir in cast(str, os.getenv("PATH")).split(os.pathsep):
execpath = os.path.join(pathdir, executable_name)
if os.path.exists(execpath):
default_engine_location = execpath
self._default_engine_location = execpath
break
application = CuraApplication.getInstance() #type: CuraApplication
self._multi_build_plate_model = None #type: Optional[MultiBuildPlateModel]
self._machine_error_checker = None #type: Optional[MachineErrorChecker]
if not default_engine_location:
if not self._default_engine_location:
raise EnvironmentError("Could not find CuraEngine")
Logger.log("i", "Found CuraEngine at: %s", default_engine_location)
Logger.log("i", "Found CuraEngine at: %s", self._default_engine_location)
default_engine_location = os.path.abspath(default_engine_location)
application.getPreferences().addPreference("backend/location", default_engine_location)
self._default_engine_location = os.path.abspath(self._default_engine_location)
application.getPreferences().addPreference("backend/location", self._default_engine_location)
# Workaround to disable layer view processing if layer view is not active.
self._layer_view_active = False #type: bool
@ -215,7 +215,12 @@ class CuraEngineBackend(QObject, Backend):
This is useful for debugging and used to actually start the engine.
:return: list of commands and args / parameters.
"""
command = [CuraApplication.getInstance().getPreferences().getValue("backend/location"), "connect", "127.0.0.1:{0}".format(self._port), ""]
from cura import ApplicationMetadata
if ApplicationMetadata.IsEnterpriseVersion:
command = [self._default_engine_location]
else:
command = [CuraApplication.getInstance().getPreferences().getValue("backend/location")]
command += ["connect", "127.0.0.1:{0}".format(self._port), ""]
parser = argparse.ArgumentParser(prog = "cura", add_help = False)
parser.add_argument("--debug", action = "store_true", default = False, help = "Turn on the debug mode by setting this option.")