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| -rw-r--r-- | gr-fec/python/fec/qa_fecapi_cc_buffer_overflow.py | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/gr-fec/python/fec/qa_fecapi_cc_buffer_overflow.py b/gr-fec/python/fec/qa_fecapi_cc_buffer_overflow.py new file mode 100644 index 0000000000..9013122d14 --- /dev/null +++ b/gr-fec/python/fec/qa_fecapi_cc_buffer_overflow.py @@ -0,0 +1,58 @@ +#!/usr/bin/env python +# +# Copyright 2020 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, gr_unittest +from gnuradio import fec +from gnuradio import blocks, analog + +# This test tries to checks for the kind of buffer overflows in the +# FECAPI convolutional decoder that were fixed in #2965 + +class test_fecapi_cc_buffer_overflow(gr_unittest.TestCase): + + def run_with_frame_len(self, frame_len): + self.tb = gr.top_block() + noise = analog.noise_source_f(analog.GR_GAUSSIAN, 1, 0) + head = blocks.head(gr.sizeof_float, self.n_frames * frame_len) + tag = blocks.stream_to_tagged_stream(gr.sizeof_float, 1, frame_len, "packet_len") + stream2pdu = blocks.tagged_stream_to_pdu(blocks.float_t, 'packet_len') + + viterbi = fec.cc_decoder.make(frame_len//2, 7, 2, [79,-109], 0, -1, fec.CC_TERMINATED, False) + cc_decoder = fec.async_decoder(viterbi, False, False, frame_len) + + self.tb.connect(noise, head, tag, stream2pdu) + self.tb.msg_connect((stream2pdu, 'pdus'), (cc_decoder, 'in')) + + self.tb.run() + # the test is considered successful if it hasn't segfaulted or aborted + + self.tb = None + + def test_buffer_overflow_00(self): + self.n_frames = 10 + + for frame_len in range(1000, 2000): + with self.subTest(frame_length = frame_len): + self.run_with_frame_len(frame_len) + +if __name__ == '__main__': + gr_unittest.run(test_fecapi_cc_buffer_overflow) |