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Issue #19623: Fixed writing to unseekable files in the aifc module.

This commit is contained in:
Serhiy Storchaka 2013-12-14 20:35:04 +02:00
parent 5da107ac72
commit 84d28b4ee5
6 changed files with 103 additions and 62 deletions
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11
Lib/aifc.py
View File

@ -771,7 +771,10 @@ class Aifc_write:
self._datalength = (self._datalength + 3) // 4
if self._datalength & 1:
self._datalength = self._datalength + 1
self._form_length_pos = self._file.tell()
try:
self._form_length_pos = self._file.tell()
except (AttributeError, OSError):
self._form_length_pos = None
commlength = self._write_form_length(self._datalength)
if self._aifc:
self._file.write(b'AIFC')
@ -783,7 +786,8 @@ class Aifc_write:
self._file.write(b'COMM')
_write_ulong(self._file, commlength)
_write_short(self._file, self._nchannels)
self._nframes_pos = self._file.tell()
if self._form_length_pos is not None:
self._nframes_pos = self._file.tell()
_write_ulong(self._file, self._nframes)
if self._comptype in (b'ULAW', b'ulaw', b'ALAW', b'alaw', b'G722'):
_write_short(self._file, 8)
@ -794,7 +798,8 @@ class Aifc_write:
self._file.write(self._comptype)
_write_string(self._file, self._compname)
self._file.write(b'SSND')
self._ssnd_length_pos = self._file.tell()
if self._form_length_pos is not None:
self._ssnd_length_pos = self._file.tell()
_write_ulong(self._file, self._datalength + 8)
_write_ulong(self._file, 0)
_write_ulong(self._file, 0)

62
Lib/test/audiotests.py
View File

@ -5,6 +5,13 @@ import io
import pickle
import sys
class UnseekableIO(io.FileIO):
def tell(self):
raise io.UnsupportedOperation
def seek(self, *args, **kwargs):
raise io.UnsupportedOperation
def byteswap2(data):
a = array.array('h')
a.frombytes(data)
@ -129,6 +136,61 @@ class AudioWriteTests(AudioTests):
self.assertEqual(testfile.read(13), b'ababagalamaga')
self.check_file(testfile, self.nframes, self.frames)
def test_unseekable_read(self):
f = self.create_file(TESTFN)
f.setnframes(self.nframes)
f.writeframes(self.frames)
f.close()
with UnseekableIO(TESTFN, 'rb') as testfile:
self.check_file(testfile, self.nframes, self.frames)
def test_unseekable_write(self):
with UnseekableIO(TESTFN, 'wb') as testfile:
f = self.create_file(testfile)
f.setnframes(self.nframes)
f.writeframes(self.frames)
f.close()
self.check_file(TESTFN, self.nframes, self.frames)
def test_unseekable_incompleted_write(self):
with UnseekableIO(TESTFN, 'wb') as testfile:
testfile.write(b'ababagalamaga')
f = self.create_file(testfile)
f.setnframes(self.nframes + 1)
try:
f.writeframes(self.frames)
except OSError:
pass
try:
f.close()
except OSError:
pass
with open(TESTFN, 'rb') as testfile:
self.assertEqual(testfile.read(13), b'ababagalamaga')
self.check_file(testfile, self.nframes + 1, self.frames)
def test_unseekable_overflowed_write(self):
with UnseekableIO(TESTFN, 'wb') as testfile:
testfile.write(b'ababagalamaga')
f = self.create_file(testfile)
f.setnframes(self.nframes - 1)
try:
f.writeframes(self.frames)
except OSError:
pass
try:
f.close()
except OSError:
pass
with open(TESTFN, 'rb') as testfile:
self.assertEqual(testfile.read(13), b'ababagalamaga')
framesize = self.nchannels * self.sampwidth
self.check_file(testfile, self.nframes - 1, self.frames[:-framesize])
class AudioTestsWithSourceFile(AudioTests):

41
Lib/test/test_aifc.py
View File

@ -8,10 +8,14 @@ import struct
import aifc
class AifcPCM8Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
class AifcTest(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile):
module = aifc
close_fd = True
test_unseekable_read = None
class AifcPCM8Test(AifcTest, unittest.TestCase):
sndfilename = 'pluck-pcm8.aiff'
sndfilenframes = 3307
nchannels = 2
@ -26,13 +30,9 @@ class AifcPCM8Test(audiotests.AudioWriteTests,
11FA 3EFB BCFC 66FF CF04 4309 C10E 5112 EE17 8216 7F14 8012 \
490E 520D EF0F CE0F E40C 630A 080A 2B0B 510E 8B11 B60E 440A \
""")
close_fd = True
class AifcPCM16Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = aifc
class AifcPCM16Test(AifcTest, unittest.TestCase):
sndfilename = 'pluck-pcm16.aiff'
sndfilenframes = 3307
nchannels = 2
@ -49,13 +49,9 @@ class AifcPCM16Test(audiotests.AudioWriteTests,
EEE21753 82071665 7FFF1443 8004128F 49A20EAF 52BB0DBA EFB40F60 CE3C0FBF \
E4B30CEC 63430A5C 08C80A20 2BBB0B08 514A0E43 8BCF1139 B6F60EEB 44120A5E \
""")
close_fd = True
class AifcPCM24Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = aifc
class AifcPCM24Test(AifcTest, unittest.TestCase):
sndfilename = 'pluck-pcm24.aiff'
sndfilenframes = 3307
nchannels = 2
@ -78,13 +74,9 @@ class AifcPCM24Test(audiotests.AudioWriteTests,
E4B49C0CEA2D 6344A80A5A7C 08C8FE0A1FFE 2BB9860B0A0E \
51486F0E44E1 8BCC64113B05 B6F4EC0EEB36 4413170A5B48 \
""")
close_fd = True
class AifcPCM32Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = aifc
class AifcPCM32Test(AifcTest, unittest.TestCase):
sndfilename = 'pluck-pcm32.aiff'
sndfilenframes = 3307
nchannels = 2
@ -107,13 +99,9 @@ class AifcPCM32Test(audiotests.AudioWriteTests,
E4B49CC00CEA2D90 6344A8800A5A7CA0 08C8FE800A1FFEE0 2BB986C00B0A0E00 \
51486F800E44E190 8BCC6480113B0580 B6F4EC000EEB3630 441317800A5B48A0 \
""")
close_fd = True
class AifcULAWTest(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = aifc
class AifcULAWTest(AifcTest, unittest.TestCase):
sndfilename = 'pluck-ulaw.aifc'
sndfilenframes = 3307
nchannels = 2
@ -132,13 +120,9 @@ class AifcULAWTest(audiotests.AudioWriteTests,
""")
if sys.byteorder != 'big':
frames = audiotests.byteswap2(frames)
close_fd = True
class AifcALAWTest(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = aifc
class AifcALAWTest(AifcTest, unittest.TestCase):
sndfilename = 'pluck-alaw.aifc'
sndfilenframes = 3307
nchannels = 2
@ -157,7 +141,6 @@ class AifcALAWTest(audiotests.AudioWriteTests,
""")
if sys.byteorder != 'big':
frames = audiotests.byteswap2(frames)
close_fd = True
class AifcMiscTest(audiotests.AudioTests, unittest.TestCase):

23
Lib/test/test_sunau.py
View File

@ -5,10 +5,12 @@ import sys
import sunau
class SunauPCM8Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
class SunauTest(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile):
module = sunau
class SunauPCM8Test(SunauTest, unittest.TestCase):
sndfilename = 'pluck-pcm8.au'
sndfilenframes = 3307
nchannels = 2
@ -25,10 +27,7 @@ class SunauPCM8Test(audiotests.AudioWriteTests,
""")
class SunauPCM16Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = sunau
class SunauPCM16Test(SunauTest, unittest.TestCase):
sndfilename = 'pluck-pcm16.au'
sndfilenframes = 3307
nchannels = 2
@ -47,10 +46,7 @@ class SunauPCM16Test(audiotests.AudioWriteTests,
""")
class SunauPCM32Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = sunau
class SunauPCM32Test(SunauTest, unittest.TestCase):
sndfilename = 'pluck-pcm32.au'
sndfilenframes = 3307
nchannels = 2
@ -75,10 +71,7 @@ class SunauPCM32Test(audiotests.AudioWriteTests,
""")
class SunauULAWTest(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = sunau
class SunauULAWTest(SunauTest, unittest.TestCase):
sndfilename = 'pluck-ulaw.au'
sndfilenframes = 3307
nchannels = 2

26
Lib/test/test_wave.py
View File

@ -5,10 +5,15 @@ import sys
import wave
class WavePCM8Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
class WaveTest(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile):
module = wave
test_unseekable_write = None
test_unseekable_overflowed_write = None
test_unseekable_incompleted_write = None
class WavePCM8Test(WaveTest, unittest.TestCase):
sndfilename = 'pluck-pcm8.wav'
sndfilenframes = 3307
nchannels = 2
@ -25,10 +30,7 @@ class WavePCM8Test(audiotests.AudioWriteTests,
""")
class WavePCM16Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = wave
class WavePCM16Test(WaveTest, unittest.TestCase):
sndfilename = 'pluck-pcm16.wav'
sndfilenframes = 3307
nchannels = 2
@ -55,10 +57,7 @@ class WavePCM16Test(audiotests.AudioWriteTests,
class WavePCM24Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = wave
class WavePCM24Test(WaveTest, unittest.TestCase):
sndfilename = 'pluck-pcm24.wav'
sndfilenframes = 3307
nchannels = 2
@ -85,10 +84,7 @@ class WavePCM24Test(audiotests.AudioWriteTests,
frames = audiotests.byteswap3(frames)
class WavePCM32Test(audiotests.AudioWriteTests,
audiotests.AudioTestsWithSourceFile,
unittest.TestCase):
module = wave
class WavePCM32Test(WaveTest, unittest.TestCase):
sndfilename = 'pluck-pcm32.wav'
sndfilenframes = 3307
nchannels = 2

2
Misc/NEWS
View File

@ -32,6 +32,8 @@ Core and Builtins
Library
-------
- Issue #19623: Fixed writing to unseekable files in the aifc module.
- Issue #17919: select.poll.register() again works with poll.POLLNVAL on AIX.
Fixed integer overflow in the eventmask parameter.