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Raise ValueError if \x00 character exists for eval argument #4052

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Merged
youknowone merged 10 commits into from
Aug 13, 2022
Merged

Raise ValueError if \x00 character exists for eval argument #4052

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56f08a1
Make eval able to receive bytes also
moreal Aug 12, 2022
bb8526a
Raise ValueError if null character exists for eval argument
moreal Aug 12, 2022
c7689c9
Remove todo comment of resolved issue
moreal Aug 12, 2022
20e7752
Apply `cargo fmt`
moreal Aug 12, 2022
7e88c8f
Inline error type
moreal Aug 12, 2022
6d01742
Unmark resolved tests
moreal Aug 12, 2022
0bd702d
Use `ArgStrOrBytesLike` python argument type
moreal Aug 13, 2022
714ce4d
Wrap unicode error as syntax error
moreal Aug 13, 2022
879ed6e
Make loop simple with `slice::contains
moreal Aug 13, 2022
c672d8f
Make mapping error simple with `map_err`
moreal Aug 13, 2022
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2 changes: 0 additions & 2 deletions Lib/test/test_cmd_line.py
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Original file line number Diff line number Diff line change
Expand Up @@ -75,8 +75,6 @@ def test_verbose(self):
rc, out, err = assert_python_ok('-vv')
self.assertNotIn(b'stack overflow', err)

# TODO: RUSTPYTHON
@unittest.expectedFailure
@unittest.skipIf(interpreter_requires_environment(),
'Cannot run -E tests when PYTHON env vars are required.')
def test_xoptions(self):
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2 changes: 0 additions & 2 deletions Lib/test/test_subprocess.py
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Expand Up @@ -761,8 +761,6 @@ def test_env(self):
stdout, stderr = p.communicate()
self.assertEqual(stdout, b"orange")

# TODO: RUSTPYTHON
@unittest.expectedFailure
# Windows requires at least the SYSTEMROOT environment variable to start
# Python
@unittest.skipIf(sys.platform == 'win32',
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4 changes: 1 addition & 3 deletions extra_tests/snippets/syntax_non_utf8.py
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Expand Up @@ -5,8 +5,6 @@

dir_path = os.path.dirname(os.path.realpath(__file__))

# TODO: RUSTPYTHON, RustPython raises a SyntaxError here, but cpython raise a ValueError
error = SyntaxError if platform.python_implementation() == 'RustPython' else ValueError
with assert_raises(error):
with assert_raises(ValueError):
with open(os.path.join(dir_path , "non_utf8.txt")) as f:
eval(f.read())
31 changes: 27 additions & 4 deletions vm/src/stdlib/builtins.rs
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Expand Up @@ -24,8 +24,8 @@ mod builtins {
format::call_object_format,
function::Either,
function::{
ArgBytesLike, ArgCallable, ArgIntoBool, ArgIterable, ArgMapping, FuncArgs, KwArgs,
OptionalArg, OptionalOption, PosArgs, PyArithmeticValue,
ArgBytesLike, ArgCallable, ArgIntoBool, ArgIterable, ArgMapping, ArgStrOrBytesLike,
FuncArgs, KwArgs, OptionalArg, OptionalOption, PosArgs, PyArithmeticValue,
},
protocol::{PyIter, PyIterReturn},
py_io,
Expand Down Expand Up @@ -248,11 +248,34 @@ mod builtins {
#[cfg(feature = "rustpython-compiler")]
#[pyfunction]
fn eval(
source: Either<PyStrRef, PyRef<crate::builtins::PyCode>>,
source: Either<ArgStrOrBytesLike, PyRef<crate::builtins::PyCode>>,
scope: ScopeArgs,
vm: &VirtualMachine,
) -> PyResult {
run_code(vm, source, scope, compile::Mode::Eval, "eval")
// source as string
let code = match source {
Either::A(either) => {
let source: &[u8] = &either.borrow_bytes();
if source.contains(&0) {
return Err(vm.new_value_error(
"source code string cannot contain null bytes".to_owned(),
));
}

let source = std::str::from_utf8(source).map_err(|err| {
let msg = format!(
"(unicode error) 'utf-8' codec can't decode byte 0x{:x?} in position {}: invalid start byte",
source[err.valid_up_to()],
err.valid_up_to()
);

vm.new_exception_msg(vm.ctx.exceptions.syntax_error.to_owned(), msg)
})?;
Ok(Either::A(vm.ctx.new_str(source)))
}
Either::B(code) => Ok(Either::B(code)),
}?;
run_code(vm, code, scope, compile::Mode::Eval, "eval")
}

/// Implements `exec`
Expand Down