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svn+ssh://pythondev@svn.python.org/python/trunk ........ r82492 | victor.stinner | 2010-07-03 15:36:19 +0200 (sam., 03 juil. 2010) | 3 lines Issue #7673: Fix security vulnerability (CVE-2010-2089) in the audioop module, ensure that the input string length is a multiple of the frame size ........
208 lines
7.6 KiB
Python
208 lines
7.6 KiB
Python
import audioop
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import unittest
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from test.support import run_unittest
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def gendata1():
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return b'\0\1\2'
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def gendata2():
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if audioop.getsample(b'\0\1', 2, 0) == 1:
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return b'\0\0\0\1\0\2'
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else:
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return b'\0\0\1\0\2\0'
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def gendata4():
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if audioop.getsample(b'\0\0\0\1', 4, 0) == 1:
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return b'\0\0\0\0\0\0\0\1\0\0\0\2'
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else:
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return b'\0\0\0\0\1\0\0\0\2\0\0\0'
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data = [gendata1(), gendata2(), gendata4()]
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INVALID_DATA = [
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('abc', 0),
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('abc', 2),
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('abc', 4),
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]
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class TestAudioop(unittest.TestCase):
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def test_max(self):
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self.assertEqual(audioop.max(data[0], 1), 2)
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self.assertEqual(audioop.max(data[1], 2), 2)
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self.assertEqual(audioop.max(data[2], 4), 2)
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def test_minmax(self):
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self.assertEqual(audioop.minmax(data[0], 1), (0, 2))
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self.assertEqual(audioop.minmax(data[1], 2), (0, 2))
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self.assertEqual(audioop.minmax(data[2], 4), (0, 2))
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def test_maxpp(self):
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self.assertEqual(audioop.maxpp(data[0], 1), 0)
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self.assertEqual(audioop.maxpp(data[1], 2), 0)
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self.assertEqual(audioop.maxpp(data[2], 4), 0)
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def test_avg(self):
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self.assertEqual(audioop.avg(data[0], 1), 1)
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self.assertEqual(audioop.avg(data[1], 2), 1)
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self.assertEqual(audioop.avg(data[2], 4), 1)
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def test_avgpp(self):
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self.assertEqual(audioop.avgpp(data[0], 1), 0)
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self.assertEqual(audioop.avgpp(data[1], 2), 0)
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self.assertEqual(audioop.avgpp(data[2], 4), 0)
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def test_rms(self):
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self.assertEqual(audioop.rms(data[0], 1), 1)
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self.assertEqual(audioop.rms(data[1], 2), 1)
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self.assertEqual(audioop.rms(data[2], 4), 1)
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def test_cross(self):
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self.assertEqual(audioop.cross(data[0], 1), 0)
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self.assertEqual(audioop.cross(data[1], 2), 0)
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self.assertEqual(audioop.cross(data[2], 4), 0)
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def test_add(self):
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data2 = []
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for d in data:
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str = bytearray(len(d))
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for i,b in enumerate(d):
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str[i] = 2*b
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data2.append(str)
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self.assertEqual(audioop.add(data[0], data[0], 1), data2[0])
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self.assertEqual(audioop.add(data[1], data[1], 2), data2[1])
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self.assertEqual(audioop.add(data[2], data[2], 4), data2[2])
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def test_bias(self):
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# Note: this test assumes that avg() works
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d1 = audioop.bias(data[0], 1, 100)
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d2 = audioop.bias(data[1], 2, 100)
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d4 = audioop.bias(data[2], 4, 100)
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self.assertEqual(audioop.avg(d1, 1), 101)
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self.assertEqual(audioop.avg(d2, 2), 101)
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self.assertEqual(audioop.avg(d4, 4), 101)
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def test_lin2lin(self):
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# too simple: we test only the size
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for d1 in data:
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for d2 in data:
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got = len(d1)//3
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wtd = len(d2)//3
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self.assertEqual(len(audioop.lin2lin(d1, got, wtd)), len(d2))
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def test_adpcm2lin(self):
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# Very cursory test
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self.assertEqual(audioop.adpcm2lin(b'\0\0', 1, None), (b'\0\0\0\0', (0,0)))
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def test_lin2adpcm(self):
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# Very cursory test
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self.assertEqual(audioop.lin2adpcm(b'\0\0\0\0', 1, None), (b'\0\0', (0,0)))
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def test_lin2alaw(self):
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self.assertEqual(audioop.lin2alaw(data[0], 1), b'\xd5\xc5\xf5')
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self.assertEqual(audioop.lin2alaw(data[1], 2), b'\xd5\xd5\xd5')
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self.assertEqual(audioop.lin2alaw(data[2], 4), b'\xd5\xd5\xd5')
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def test_alaw2lin(self):
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# Cursory
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d = audioop.lin2alaw(data[0], 1)
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self.assertEqual(audioop.alaw2lin(d, 1), data[0])
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def test_lin2ulaw(self):
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self.assertEqual(audioop.lin2ulaw(data[0], 1), b'\xff\xe7\xdb')
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self.assertEqual(audioop.lin2ulaw(data[1], 2), b'\xff\xff\xff')
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self.assertEqual(audioop.lin2ulaw(data[2], 4), b'\xff\xff\xff')
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def test_ulaw2lin(self):
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# Cursory
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d = audioop.lin2ulaw(data[0], 1)
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self.assertEqual(audioop.ulaw2lin(d, 1), data[0])
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def test_mul(self):
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data2 = []
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for d in data:
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str = bytearray(len(d))
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for i,b in enumerate(d):
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str[i] = 2*b
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data2.append(str)
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self.assertEqual(audioop.mul(data[0], 1, 2), data2[0])
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self.assertEqual(audioop.mul(data[1],2, 2), data2[1])
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self.assertEqual(audioop.mul(data[2], 4, 2), data2[2])
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def test_ratecv(self):
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state = None
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d1, state = audioop.ratecv(data[0], 1, 1, 8000, 16000, state)
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d2, state = audioop.ratecv(data[0], 1, 1, 8000, 16000, state)
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self.assertEqual(d1 + d2, b'\000\000\001\001\002\001\000\000\001\001\002')
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def test_reverse(self):
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self.assertEqual(audioop.reverse(data[0], 1), b'\2\1\0')
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def test_tomono(self):
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data2 = bytearray()
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for d in data[0]:
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data2.append(d)
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data2.append(d)
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self.assertEqual(audioop.tomono(data2, 1, 0.5, 0.5), data[0])
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def test_tostereo(self):
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data2 = bytearray()
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for d in data[0]:
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data2.append(d)
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data2.append(d)
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self.assertEqual(audioop.tostereo(data[0], 1, 1, 1), data2)
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def test_findfactor(self):
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self.assertEqual(audioop.findfactor(data[1], data[1]), 1.0)
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def test_findfit(self):
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self.assertEqual(audioop.findfit(data[1], data[1]), (0, 1.0))
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def test_findmax(self):
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self.assertEqual(audioop.findmax(data[1], 1), 2)
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def test_getsample(self):
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for i in range(3):
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self.assertEqual(audioop.getsample(data[0], 1, i), i)
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self.assertEqual(audioop.getsample(data[1], 2, i), i)
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self.assertEqual(audioop.getsample(data[2], 4, i), i)
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def test_negativelen(self):
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# from issue 3306, previously it segfaulted
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self.assertRaises(audioop.error,
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audioop.findmax, ''.join(chr(x) for x in range(256)), -2392392)
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def test_issue7673(self):
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state = None
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for data, size in INVALID_DATA:
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size2 = size
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self.assertRaises(audioop.error, audioop.getsample, data, size, 0)
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self.assertRaises(audioop.error, audioop.max, data, size)
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self.assertRaises(audioop.error, audioop.minmax, data, size)
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self.assertRaises(audioop.error, audioop.avg, data, size)
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self.assertRaises(audioop.error, audioop.rms, data, size)
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self.assertRaises(audioop.error, audioop.avgpp, data, size)
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self.assertRaises(audioop.error, audioop.maxpp, data, size)
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self.assertRaises(audioop.error, audioop.cross, data, size)
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self.assertRaises(audioop.error, audioop.mul, data, size, 1.0)
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self.assertRaises(audioop.error, audioop.tomono, data, size, 0.5, 0.5)
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self.assertRaises(audioop.error, audioop.tostereo, data, size, 0.5, 0.5)
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self.assertRaises(audioop.error, audioop.add, data, data, size)
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self.assertRaises(audioop.error, audioop.bias, data, size, 0)
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self.assertRaises(audioop.error, audioop.reverse, data, size)
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self.assertRaises(audioop.error, audioop.lin2lin, data, size, size2)
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self.assertRaises(audioop.error, audioop.ratecv, data, size, 1, 1, 1, state)
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self.assertRaises(audioop.error, audioop.lin2ulaw, data, size)
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self.assertRaises(audioop.error, audioop.ulaw2lin, data, size)
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self.assertRaises(audioop.error, audioop.lin2alaw, data, size)
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self.assertRaises(audioop.error, audioop.alaw2lin, data, size)
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self.assertRaises(audioop.error, audioop.lin2adpcm, data, size, state)
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self.assertRaises(audioop.error, audioop.adpcm2lin, data, size, state)
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def test_main():
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run_unittest(TestAudioop)
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if __name__ == '__main__':
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test_main()
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