From 25b4add5b0569e626afd8b3b5b7dd4a7551372c9 Mon Sep 17 00:00:00 2001
From: "R. David Murray" <rdmurray@bitdance.com>
Date: Wed, 29 Apr 2009 13:17:37 +0000
Subject: =?UTF-8?q?Fix=20issue=202245.=20=20aifc=20now=20skips=20any=20chu?=
 =?UTF-8?q?nk=20type=20it=20doesn't=20actually=20process=20instead=20of=20?=
 =?UTF-8?q?throwing=20errors=20for=20anything=20not=20in=20an=20explicit?=
 =?UTF-8?q?=20skip=20list.=20=20This=20is=20per=20this=20spec:=20http://ww?=
 =?UTF-8?q?w.cnpbagwell.com/aiff-c.txt.=20Spec=20reference=20and=20test=20?=
 =?UTF-8?q?sound=20file=20provided=20by=20Santiago=20Peres=C3=B3n,=20fix?=
 =?UTF-8?q?=20based=20on=20patch=20by=20Hiroaki=20Kawai.?=
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---
 Lib/aifc.py                    |   7 -------
 Lib/test/Sine-1000Hz-300ms.aif | Bin 0 -> 61696 bytes
 Lib/test/test_aifc.py          |  24 ++++++++++++++++++++++++
 Lib/test/test_sundry.py        |   1 -
 Misc/ACKS                      |   2 ++
 Misc/NEWS                      |   2 ++
 6 files changed, 28 insertions(+), 8 deletions(-)
 create mode 100644 Lib/test/Sine-1000Hz-300ms.aif
 create mode 100644 Lib/test/test_aifc.py

diff --git a/Lib/aifc.py b/Lib/aifc.py
index f663dd6..8e4f864 100644
--- a/Lib/aifc.py
+++ b/Lib/aifc.py
@@ -144,9 +144,6 @@ class Error(Exception):
 
 _AIFC_version = 0xA2805140L     # Version 1 of AIFF-C
 
-_skiplist = 'COMT', 'INST', 'MIDI', 'AESD', \
-      'APPL', 'NAME', 'AUTH', '(c) ', 'ANNO'
-
 def _read_long(file):
     try:
         return struct.unpack('>l', file.read(4))[0]
@@ -314,10 +311,6 @@ class Aifc_read:
                 self._version = _read_ulong(chunk)
             elif chunkname == 'MARK':
                 self._readmark(chunk)
-            elif chunkname in _skiplist:
-                pass
-            else:
-                raise Error, 'unrecognized chunk type '+chunk.chunkname
             chunk.skip()
         if not self._comm_chunk_read or not self._ssnd_chunk:
             raise Error, 'COMM chunk and/or SSND chunk missing'
diff --git a/Lib/test/Sine-1000Hz-300ms.aif b/Lib/test/Sine-1000Hz-300ms.aif
new file mode 100644
index 0000000..bf08f5c
Binary files /dev/null and b/Lib/test/Sine-1000Hz-300ms.aif differ
diff --git a/Lib/test/test_aifc.py b/Lib/test/test_aifc.py
new file mode 100644
index 0000000..58380e0
--- /dev/null
+++ b/Lib/test/test_aifc.py
@@ -0,0 +1,24 @@
+from test.test_support import findfile, run_unittest
+import unittest
+
+import aifc
+
+
+class AIFCTest(unittest.TestCase):
+
+    def setUp(self):
+        self.sndfilepath = findfile('Sine-1000Hz-300ms.aif')
+
+    def test_skipunknown(self):
+        #Issue 2245
+        #This file contains chunk types aifc doesn't recognize.
+        f = aifc.open(self.sndfilepath)
+        f.close()
+
+
+def test_main():
+    run_unittest(AIFCTest)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_sundry.py b/Lib/test/test_sundry.py
index 48cbcd6..cef155b 100644
--- a/Lib/test/test_sundry.py
+++ b/Lib/test/test_sundry.py
@@ -11,7 +11,6 @@ class TestUntestedModules(unittest.TestCase):
         with warnings.catch_warnings():
             warnings.simplefilter("ignore")
             import CGIHTTPServer
-            import aifc
             import audiodev
             import bdb
             import cgitb
diff --git a/Misc/ACKS b/Misc/ACKS
index 4b409e1..d650b67 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -370,6 +370,7 @@ Tamito Kajiyama
 Peter van Kampen
 Jacob Kaplan-Moss
 Lou Kates
+Hiroaki Kawai
 Sebastien Keim
 Robert Kern
 Randall Kern
@@ -541,6 +542,7 @@ Randy Pausch
 Samuele Pedroni
 Marcel van der Peijl
 Steven Pemberton
+Santiago Peresón
 Mark Perrego
 Trevor Perrin
 Tim Peters
diff --git a/Misc/NEWS b/Misc/NEWS
index efd57d4..7a8cb91 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -255,6 +255,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
+
 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive 
   anymore.
 
-- 
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