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[2.7] bpo-28261: Prevent raising SystemError where PyArg_ParseTuple is used to parse non-args #3213

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Merged
serhiy-storchaka merged 1 commit into from
Aug 26, 2017
Merged

[2.7] bpo-28261: Prevent raising SystemError where PyArg_ParseTuple is used to parse non-args #3213

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4 changes: 4 additions & 0 deletions Lib/test/test_audioop.py
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Original file line number Diff line number Diff line change
Expand Up @@ -325,6 +325,10 @@ def test_ratecv(self):
self.assertEqual(audioop.ratecv(datas[w], w, 1, 8000, 8000, None, 30, 10)[0],
expected[w])

self.assertRaises(TypeError, audioop.ratecv, b'', 1, 1, 8000, 8000, 42)
self.assertRaises(TypeError, audioop.ratecv,
b'', 1, 1, 8000, 8000, (1, (42,)))

def test_reverse(self):
for w in 1, 2, 4:
self.assertEqual(audioop.reverse(b'', w), b'')
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14 changes: 12 additions & 2 deletions Modules/audioop.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1086,7 +1086,7 @@ audioop_ratecv(PyObject *self, PyObject *args)
char *cp, *ncp;
int len, size, nchannels, inrate, outrate, weightA, weightB;
int chan, d, *prev_i, *cur_i, cur_o;
PyObject *state, *samps, *str, *rv = NULL;
PyObject *state, *samps, *str, *rv = NULL, *channel;
int bytes_per_frame;

weightA = 1;
Expand Down Expand Up @@ -1152,6 +1152,10 @@ audioop_ratecv(PyObject *self, PyObject *args)
prev_i[chan] = cur_i[chan] = 0;
}
else {
if (!PyTuple_Check(state)) {
PyErr_SetString(PyExc_TypeError, "state must be a tuple or None");
goto exit;
}
if (!PyArg_ParseTuple(state,
"iO!;audioop.ratecv: illegal state argument",
&d, &PyTuple_Type, &samps))
Expand All @@ -1162,7 +1166,13 @@ audioop_ratecv(PyObject *self, PyObject *args)
goto exit;
}
for (chan = 0; chan < nchannels; chan++) {
if (!PyArg_ParseTuple(PyTuple_GetItem(samps, chan),
channel = PyTuple_GetItem(samps, chan);
if (!PyTuple_Check(channel)) {
PyErr_SetString(PyExc_TypeError,
"ratecv(): illegal state argument");
goto exit;
}
if (!PyArg_ParseTuple(channel,
"ii:ratecv", &prev_i[chan],
&cur_i[chan]))
goto exit;
Expand Down