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#1079: Fix parsing of encoded words.

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This is a behavior change: before this leading and trailing spaces were
stripped from ASCII parts, now they are preserved.  Without this fix we didn't
parse the examples in the RFC correctly, so I think breaking backward
compatibility here is justified.

Patch by Ralf Schlatterbeck.
This commit is contained in:
R David Murray 2012-06-02 17:56:49 -04:00
parent e11eb0f21b
commit 07ea53cb21
5 changed files with 113 additions and 19 deletions
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79
Lib/test/test_email/test_email.py
View file

@ -1994,9 +1994,9 @@ class TestRFC2047(TestEmailBase):
foo bar =?mac-iceland?q?r=8Aksm=9Arg=8Cs?="""
dh = decode_header(s)
eq(dh, [
(b'Re:', None),
(b'Re: ', None),
(b'r\x8aksm\x9arg\x8cs', 'mac-iceland'),
(b'baz foo bar', None),
(b' baz foo bar ', None),
(b'r\x8aksm\x9arg\x8cs', 'mac-iceland')])
header = make_header(dh)
eq(str(header),
@ -2005,35 +2005,37 @@ class TestRFC2047(TestEmailBase):
Re: =?mac-iceland?q?r=8Aksm=9Arg=8Cs?= baz foo bar =?mac-iceland?q?r=8Aksm?=
=?mac-iceland?q?=9Arg=8Cs?=""")
def test_whitespace_eater_unicode(self):
def test_whitespace_keeper_unicode(self):
eq = self.assertEqual
s = '=?ISO-8859-1?Q?Andr=E9?= Pirard <pirard@dom.ain>'
dh = decode_header(s)
eq(dh, [(b'Andr\xe9', 'iso-8859-1'),
(b'Pirard <pirard@dom.ain>', None)])
(b' Pirard <pirard@dom.ain>', None)])
header = str(make_header(dh))
eq(header, 'Andr\xe9 Pirard <pirard@dom.ain>')
def test_whitespace_eater_unicode_2(self):
def test_whitespace_keeper_unicode_2(self):
eq = self.assertEqual
s = 'The =?iso-8859-1?b?cXVpY2sgYnJvd24gZm94?= jumped over the =?iso-8859-1?b?bGF6eSBkb2c=?='
dh = decode_header(s)
eq(dh, [(b'The', None), (b'quick brown fox', 'iso-8859-1'),
(b'jumped over the', None), (b'lazy dog', 'iso-8859-1')])
eq(dh, [(b'The ', None), (b'quick brown fox', 'iso-8859-1'),
(b' jumped over the ', None), (b'lazy dog', 'iso-8859-1')])
hu = str(make_header(dh))
eq(hu, 'The quick brown fox jumped over the lazy dog')
def test_rfc2047_missing_whitespace(self):
s = 'Sm=?ISO-8859-1?B?9g==?=rg=?ISO-8859-1?B?5Q==?=sbord'
dh = decode_header(s)
self.assertEqual(dh, [(s, None)])
self.assertEqual(dh, [(b'Sm', None), (b'\xf6', 'iso-8859-1'),
(b'rg', None), (b'\xe5', 'iso-8859-1'),
(b'sbord', None)])
def test_rfc2047_with_whitespace(self):
s = 'Sm =?ISO-8859-1?B?9g==?= rg =?ISO-8859-1?B?5Q==?= sbord'
dh = decode_header(s)
self.assertEqual(dh, [(b'Sm', None), (b'\xf6', 'iso-8859-1'),
(b'rg', None), (b'\xe5', 'iso-8859-1'),
(b'sbord', None)])
self.assertEqual(dh, [(b'Sm ', None), (b'\xf6', 'iso-8859-1'),
(b' rg ', None), (b'\xe5', 'iso-8859-1'),
(b' sbord', None)])
def test_rfc2047_B_bad_padding(self):
s = '=?iso-8859-1?B?%s?='
@ -2051,6 +2053,57 @@ Re: =?mac-iceland?q?r=8Aksm=9Arg=8Cs?= baz foo bar =?mac-iceland?q?r=8Aksm?=
self.assertEqual(decode_header(s),
[(b'andr\xe9=zz', 'iso-8659-1')])
def test_rfc2047_rfc2047_1(self):
# 1st testcase at end of rfc2047
s = '(=?ISO-8859-1?Q?a?=)'
self.assertEqual(decode_header(s),
[(b'(', None), (b'a', 'iso-8859-1'), (b')', None)])
def test_rfc2047_rfc2047_2(self):
# 2nd testcase at end of rfc2047
s = '(=?ISO-8859-1?Q?a?= b)'
self.assertEqual(decode_header(s),
[(b'(', None), (b'a', 'iso-8859-1'), (b' b)', None)])
def test_rfc2047_rfc2047_3(self):
# 3rd testcase at end of rfc2047
s = '(=?ISO-8859-1?Q?a?= =?ISO-8859-1?Q?b?=)'
self.assertEqual(decode_header(s),
[(b'(', None), (b'ab', 'iso-8859-1'), (b')', None)])
def test_rfc2047_rfc2047_4(self):
# 4th testcase at end of rfc2047
s = '(=?ISO-8859-1?Q?a?= =?ISO-8859-1?Q?b?=)'
self.assertEqual(decode_header(s),
[(b'(', None), (b'ab', 'iso-8859-1'), (b')', None)])
def test_rfc2047_rfc2047_5a(self):
# 5th testcase at end of rfc2047 newline is \r\n
s = '(=?ISO-8859-1?Q?a?=\r\n =?ISO-8859-1?Q?b?=)'
self.assertEqual(decode_header(s),
[(b'(', None), (b'ab', 'iso-8859-1'), (b')', None)])
def test_rfc2047_rfc2047_5b(self):
# 5th testcase at end of rfc2047 newline is \n
s = '(=?ISO-8859-1?Q?a?=\n =?ISO-8859-1?Q?b?=)'
self.assertEqual(decode_header(s),
[(b'(', None), (b'ab', 'iso-8859-1'), (b')', None)])
def test_rfc2047_rfc2047_6(self):
# 6th testcase at end of rfc2047
s = '(=?ISO-8859-1?Q?a_b?=)'
self.assertEqual(decode_header(s),
[(b'(', None), (b'a b', 'iso-8859-1'), (b')', None)])
def test_rfc2047_rfc2047_7(self):
# 7th testcase at end of rfc2047
s = '(=?ISO-8859-1?Q?a?= =?ISO-8859-2?Q?_b?=)'
self.assertEqual(decode_header(s),
[(b'(', None), (b'a', 'iso-8859-1'), (b' b', 'iso-8859-2'),
(b')', None)])
self.assertEqual(make_header(decode_header(s)).encode(), s.lower())
self.assertEqual(str(make_header(decode_header(s))), '(a b)')
# Test the MIMEMessage class
class TestMIMEMessage(TestEmailBase):
@ -4388,11 +4441,11 @@ A very long line that must get split to something other than at the
h = make_header(decode_header(s))
eq(h.encode(), s)
def test_whitespace_eater(self):
def test_whitespace_keeper(self):
eq = self.assertEqual
s = 'Subject: =?koi8-r?b?8NLP18XSy8EgzsEgxsnOwczYztk=?= =?koi8-r?q?=CA?= zz.'
parts = decode_header(s)
eq(parts, [(b'Subject:', None), (b'\xf0\xd2\xcf\xd7\xc5\xd2\xcb\xc1 \xce\xc1 \xc6\xc9\xce\xc1\xcc\xd8\xce\xd9\xca', 'koi8-r'), (b'zz.', None)])
eq(parts, [(b'Subject: ', None), (b'\xf0\xd2\xcf\xd7\xc5\xd2\xcb\xc1 \xce\xc1 \xc6\xc9\xce\xc1\xcc\xd8\xce\xd9\xca', 'koi8-r'), (b' zz.', None)])
hdr = make_header(parts)
eq(hdr.encode(),
'Subject: =?koi8-r?b?8NLP18XSy8EgzsEgxsnOwczYztnK?= zz.')