diff options
| author | Daniel Estévez <daniel@destevez.net> | 2020-01-06 16:59:30 +0100 |
|---|---|---|
| committer | Marcus Müller <marcus@hostalia.de> | 2020-01-06 21:33:27 +0100 |
| commit | 661993be72349d9f582fe3e0b0bcd9609edf024f (patch) | |
| tree | a02ac460387b563cf9813237d0e9883d0dfcf971 /gr-fec | |
| parent | 55bd79edbf126cedeb8ed62b25f4a219b7b20239 (diff) | |
gr-fec: Add QA test for buffer overflow in CC decoder
Adds a QA test that tries to detect the kind of buffer
overflows in the CC decoder that were fixed in #2965
The decoder is run with different frame lengths, and several
frames are tried to be decoded for each frame length. The
test is considered successful if it doesn't segfault or abort.
Diffstat (limited to 'gr-fec')
| -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) |