/usr/lib/python2.7/dist-packages/werkzeug/testsuite/formparser.py is in python-werkzeug 0.9.4+dfsg-1.1ubuntu2.1.
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"""
werkzeug.testsuite.formparser
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tests the form parsing facilities.
:copyright: (c) 2013 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
from __future__ import with_statement
import unittest
from os.path import join, dirname
from werkzeug.testsuite import WerkzeugTestCase
from werkzeug import formparser
from werkzeug.test import create_environ, Client
from werkzeug.wrappers import Request, Response
from werkzeug.exceptions import RequestEntityTooLarge
from werkzeug.datastructures import MultiDict
from werkzeug.formparser import parse_form_data
from werkzeug._compat import BytesIO
@Request.application
def form_data_consumer(request):
result_object = request.args['object']
if result_object == 'text':
return Response(repr(request.form['text']))
f = request.files[result_object]
return Response(b'\n'.join((
repr(f.filename).encode('ascii'),
repr(f.name).encode('ascii'),
repr(f.content_type).encode('ascii'),
f.stream.read()
)))
def get_contents(filename):
with open(filename, 'rb') as f:
return f.read()
class FormParserTestCase(WerkzeugTestCase):
def test_limiting(self):
data = b'foo=Hello+World&bar=baz'
req = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='application/x-www-form-urlencoded',
method='POST')
req.max_content_length = 400
self.assert_strict_equal(req.form['foo'], u'Hello World')
req = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='application/x-www-form-urlencoded',
method='POST')
req.max_form_memory_size = 7
self.assert_raises(RequestEntityTooLarge, lambda: req.form['foo'])
req = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='application/x-www-form-urlencoded',
method='POST')
req.max_form_memory_size = 400
self.assert_strict_equal(req.form['foo'], u'Hello World')
data = (b'--foo\r\nContent-Disposition: form-field; name=foo\r\n\r\n'
b'Hello World\r\n'
b'--foo\r\nContent-Disposition: form-field; name=bar\r\n\r\n'
b'bar=baz\r\n--foo--')
req = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; boundary=foo',
method='POST')
req.max_content_length = 4
self.assert_raises(RequestEntityTooLarge, lambda: req.form['foo'])
req = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; boundary=foo',
method='POST')
req.max_content_length = 400
self.assert_strict_equal(req.form['foo'], u'Hello World')
req = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; boundary=foo',
method='POST')
req.max_form_memory_size = 7
self.assert_raises(RequestEntityTooLarge, lambda: req.form['foo'])
req = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; boundary=foo',
method='POST')
req.max_form_memory_size = 400
self.assert_strict_equal(req.form['foo'], u'Hello World')
def test_parse_form_data_put_without_content(self):
# A PUT without a Content-Type header returns empty data
# Both rfc1945 and rfc2616 (1.0 and 1.1) say "Any HTTP/[1.0/1.1] message
# containing an entity-body SHOULD include a Content-Type header field
# defining the media type of that body." In the case where either
# headers are omitted, parse_form_data should still work.
env = create_environ('/foo', 'http://example.org/', method='PUT')
del env['CONTENT_TYPE']
del env['CONTENT_LENGTH']
stream, form, files = formparser.parse_form_data(env)
self.assert_strict_equal(stream.read(), b'')
self.assert_strict_equal(len(form), 0)
self.assert_strict_equal(len(files), 0)
def test_parse_form_data_get_without_content(self):
env = create_environ('/foo', 'http://example.org/', method='GET')
del env['CONTENT_TYPE']
del env['CONTENT_LENGTH']
stream, form, files = formparser.parse_form_data(env)
self.assert_strict_equal(stream.read(), b'')
self.assert_strict_equal(len(form), 0)
self.assert_strict_equal(len(files), 0)
def test_large_file(self):
data = b'x' * (1024 * 600)
req = Request.from_values(data={'foo': (BytesIO(data), 'test.txt')},
method='POST')
# make sure we have a real file here, because we expect to be
# on the disk. > 1024 * 500
self.assert_true(hasattr(req.files['foo'].stream, u'fileno'))
# close file to prevent fds from leaking
req.files['foo'].close()
def test_streaming_parse(self):
data = b'x' * (1024 * 600)
class StreamMPP(formparser.MultiPartParser):
def parse(self, file, boundary, content_length):
i = iter(self.parse_lines(file, boundary, content_length))
one = next(i)
two = next(i)
return self.cls(()), {'one': one, 'two': two}
class StreamFDP(formparser.FormDataParser):
def _sf_parse_multipart(self, stream, mimetype,
content_length, options):
form, files = StreamMPP(
self.stream_factory, self.charset, self.errors,
max_form_memory_size=self.max_form_memory_size,
cls=self.cls).parse(stream, options.get('boundary').encode('ascii'),
content_length)
return stream, form, files
parse_functions = {}
parse_functions.update(formparser.FormDataParser.parse_functions)
parse_functions['multipart/form-data'] = _sf_parse_multipart
class StreamReq(Request):
form_data_parser_class = StreamFDP
req = StreamReq.from_values(data={'foo': (BytesIO(data), 'test.txt')},
method='POST')
self.assert_strict_equal('begin_file', req.files['one'][0])
self.assert_strict_equal(('foo', 'test.txt'), req.files['one'][1][1:])
self.assert_strict_equal('cont', req.files['two'][0])
self.assert_strict_equal(data, req.files['two'][1])
class MultiPartTestCase(WerkzeugTestCase):
def test_basic(self):
resources = join(dirname(__file__), 'multipart')
client = Client(form_data_consumer, Response)
repository = [
('firefox3-2png1txt', '---------------------------186454651713519341951581030105', [
(u'anchor.png', 'file1', 'image/png', 'file1.png'),
(u'application_edit.png', 'file2', 'image/png', 'file2.png')
], u'example text'),
('firefox3-2pnglongtext', '---------------------------14904044739787191031754711748', [
(u'accept.png', 'file1', 'image/png', 'file1.png'),
(u'add.png', 'file2', 'image/png', 'file2.png')
], u'--long text\r\n--with boundary\r\n--lookalikes--'),
('opera8-2png1txt', '----------zEO9jQKmLc2Cq88c23Dx19', [
(u'arrow_branch.png', 'file1', 'image/png', 'file1.png'),
(u'award_star_bronze_1.png', 'file2', 'image/png', 'file2.png')
], u'blafasel öäü'),
('webkit3-2png1txt', '----WebKitFormBoundaryjdSFhcARk8fyGNy6', [
(u'gtk-apply.png', 'file1', 'image/png', 'file1.png'),
(u'gtk-no.png', 'file2', 'image/png', 'file2.png')
], u'this is another text with ümläüts'),
('ie6-2png1txt', '---------------------------7d91b03a20128', [
(u'file1.png', 'file1', 'image/x-png', 'file1.png'),
(u'file2.png', 'file2', 'image/x-png', 'file2.png')
], u'ie6 sucks :-/')
]
for name, boundary, files, text in repository:
folder = join(resources, name)
data = get_contents(join(folder, 'request.txt'))
for filename, field, content_type, fsname in files:
response = client.post('/?object=' + field, data=data, content_type=
'multipart/form-data; boundary="%s"' % boundary,
content_length=len(data))
lines = response.get_data().split(b'\n', 3)
self.assert_strict_equal(lines[0], repr(filename).encode('ascii'))
self.assert_strict_equal(lines[1], repr(field).encode('ascii'))
self.assert_strict_equal(lines[2], repr(content_type).encode('ascii'))
self.assert_strict_equal(lines[3], get_contents(join(folder, fsname)))
response = client.post('/?object=text', data=data, content_type=
'multipart/form-data; boundary="%s"' % boundary,
content_length=len(data))
self.assert_strict_equal(response.get_data(), repr(text).encode('utf-8'))
def test_ie7_unc_path(self):
client = Client(form_data_consumer, Response)
data_file = join(dirname(__file__), 'multipart', 'ie7_full_path_request.txt')
data = get_contents(data_file)
boundary = '---------------------------7da36d1b4a0164'
response = client.post('/?object=cb_file_upload_multiple', data=data, content_type=
'multipart/form-data; boundary="%s"' % boundary, content_length=len(data))
lines = response.get_data().split(b'\n', 3)
self.assert_strict_equal(lines[0],
repr(u'Sellersburg Town Council Meeting 02-22-2010doc.doc').encode('ascii'))
def test_end_of_file(self):
# This test looks innocent but it was actually timeing out in
# the Werkzeug 0.5 release version (#394)
data = (
b'--foo\r\n'
b'Content-Disposition: form-data; name="test"; filename="test.txt"\r\n'
b'Content-Type: text/plain\r\n\r\n'
b'file contents and no end'
)
data = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; boundary=foo',
method='POST')
self.assert_true(not data.files)
self.assert_true(not data.form)
def test_broken(self):
data = (
'--foo\r\n'
'Content-Disposition: form-data; name="test"; filename="test.txt"\r\n'
'Content-Transfer-Encoding: base64\r\n'
'Content-Type: text/plain\r\n\r\n'
'broken base 64'
'--foo--'
)
_, form, files = formparser.parse_form_data(create_environ(data=data,
method='POST', content_type='multipart/form-data; boundary=foo'))
self.assert_true(not files)
self.assert_true(not form)
self.assert_raises(ValueError, formparser.parse_form_data,
create_environ(data=data, method='POST',
content_type='multipart/form-data; boundary=foo'),
silent=False)
def test_file_no_content_type(self):
data = (
b'--foo\r\n'
b'Content-Disposition: form-data; name="test"; filename="test.txt"\r\n\r\n'
b'file contents\r\n--foo--'
)
data = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; boundary=foo',
method='POST')
self.assert_equal(data.files['test'].filename, 'test.txt')
self.assert_strict_equal(data.files['test'].read(), b'file contents')
def test_extra_newline(self):
# this test looks innocent but it was actually timeing out in
# the Werkzeug 0.5 release version (#394)
data = (
b'\r\n\r\n--foo\r\n'
b'Content-Disposition: form-data; name="foo"\r\n\r\n'
b'a string\r\n'
b'--foo--'
)
data = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; boundary=foo',
method='POST')
self.assert_true(not data.files)
self.assert_strict_equal(data.form['foo'], u'a string')
def test_headers(self):
data = (b'--foo\r\n'
b'Content-Disposition: form-data; name="foo"; filename="foo.txt"\r\n'
b'X-Custom-Header: blah\r\n'
b'Content-Type: text/plain; charset=utf-8\r\n\r\n'
b'file contents, just the contents\r\n'
b'--foo--')
req = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; boundary=foo',
method='POST')
foo = req.files['foo']
self.assert_strict_equal(foo.mimetype, 'text/plain')
self.assert_strict_equal(foo.mimetype_params, {'charset': 'utf-8'})
self.assert_strict_equal(foo.headers['content-type'], foo.content_type)
self.assert_strict_equal(foo.content_type, 'text/plain; charset=utf-8')
self.assert_strict_equal(foo.headers['x-custom-header'], 'blah')
def test_nonstandard_line_endings(self):
for nl in b'\n', b'\r', b'\r\n':
data = nl.join((
b'--foo',
b'Content-Disposition: form-data; name=foo',
b'',
b'this is just bar',
b'--foo',
b'Content-Disposition: form-data; name=bar',
b'',
b'blafasel',
b'--foo--'
))
req = Request.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; '
'boundary=foo', method='POST')
self.assert_strict_equal(req.form['foo'], u'this is just bar')
self.assert_strict_equal(req.form['bar'], u'blafasel')
def test_failures(self):
def parse_multipart(stream, boundary, content_length):
parser = formparser.MultiPartParser(content_length)
return parser.parse(stream, boundary, content_length)
self.assert_raises(ValueError, parse_multipart, BytesIO(), b'broken ', 0)
data = b'--foo\r\n\r\nHello World\r\n--foo--'
self.assert_raises(ValueError, parse_multipart, BytesIO(data), b'foo', len(data))
data = b'--foo\r\nContent-Disposition: form-field; name=foo\r\n' \
b'Content-Transfer-Encoding: base64\r\n\r\nHello World\r\n--foo--'
self.assert_raises(ValueError, parse_multipart, BytesIO(data), b'foo', len(data))
data = b'--foo\r\nContent-Disposition: form-field; name=foo\r\n\r\nHello World\r\n'
self.assert_raises(ValueError, parse_multipart, BytesIO(data), b'foo', len(data))
x = formparser.parse_multipart_headers(['foo: bar\r\n', ' x test\r\n'])
self.assert_strict_equal(x['foo'], 'bar\n x test')
self.assert_raises(ValueError, formparser.parse_multipart_headers,
['foo: bar\r\n', ' x test'])
def test_bad_newline_bad_newline_assumption(self):
class ISORequest(Request):
charset = 'latin1'
contents = b'U2vlbmUgbORu'
data = b'--foo\r\nContent-Disposition: form-data; name="test"\r\n' \
b'Content-Transfer-Encoding: base64\r\n\r\n' + \
contents + b'\r\n--foo--'
req = ISORequest.from_values(input_stream=BytesIO(data),
content_length=len(data),
content_type='multipart/form-data; boundary=foo',
method='POST')
self.assert_strict_equal(req.form['test'], u'Sk\xe5ne l\xe4n')
def test_empty_multipart(self):
environ = {}
data = b'--boundary--'
environ['REQUEST_METHOD'] = 'POST'
environ['CONTENT_TYPE'] = 'multipart/form-data; boundary=boundary'
environ['CONTENT_LENGTH'] = str(len(data))
environ['wsgi.input'] = BytesIO(data)
stream, form, files = parse_form_data(environ, silent=False)
rv = stream.read()
self.assert_equal(rv, b'')
self.assert_equal(form, MultiDict())
self.assert_equal(files, MultiDict())
class InternalFunctionsTestCase(WerkzeugTestCase):
def test_line_parser(self):
assert formparser._line_parse('foo') == ('foo', False)
assert formparser._line_parse('foo\r\n') == ('foo', True)
assert formparser._line_parse('foo\r') == ('foo', True)
assert formparser._line_parse('foo\n') == ('foo', True)
def test_find_terminator(self):
lineiter = iter(b'\n\n\nfoo\nbar\nbaz'.splitlines(True))
find_terminator = formparser.MultiPartParser()._find_terminator
line = find_terminator(lineiter)
self.assert_equal(line, b'foo')
self.assert_equal(list(lineiter), [b'bar\n', b'baz'])
self.assert_equal(find_terminator([]), b'')
self.assert_equal(find_terminator([b'']), b'')
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(FormParserTestCase))
suite.addTest(unittest.makeSuite(MultiPartTestCase))
suite.addTest(unittest.makeSuite(InternalFunctionsTestCase))
return suite
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