def _raise_exception(self, errval):
if isinstance(errval, (basestring, numbers.Number)):
raise lupa.LuaError(errval)
elif errval['etype'] == 'ptp':
raise PTPError(errval)
else:
raise lupa.LuaError(parse_table(errval))
def _execute_in_sandbox(lua, script):
"""
Execute ``script`` in ``lua`` runtime using ``sandbox``.
Return a (sandboxed) global environment for the executed script.
"sandbox" module should be importable in the environment.
It should provide ``sandbox.run(untrusted_code)`` method and
``sandbox.env`` table with a global environment.
See ``splash/lua_modules/sandbox.lua``.
"""
sandbox = lua.eval("require('sandbox')")
result = sandbox.run(script)
if result is not True:
ok, res = result
raise lupa.LuaError(res)
return sandbox.env
def execute_in_sandbox(lua, script, sandbox=None):
"""
Execute ``script`` in ``lua`` runtime using ``sandbox``.
Return a (sandboxed) global environment for the executed script.
``sandbox`` script should provide a ``run(untrusted_code)`` Lua function
and ``env`` table with a global environment. By default, a sandbox
from ``splash/scripts/sandbox.lua`` is used.
"""
if sandbox is None:
sandbox = get_script_source("sandbox.lua")
lua.execute(sandbox)
run = lua.globals()["run"]
result = run(script)
if result is not True:
ok, res = result
raise lupa.LuaError(res)
return lua.globals()["env"]