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Fix invalid invocations of errors.LineTooLong. #1335

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Nov 1, 2016
Merged

Fix invalid invocations of errors.LineTooLong. #1335

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2 changes: 1 addition & 1 deletion CHANGES.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -49,7 +49,7 @@ CHANGES

- Added option on `StaticRoute` to follow symlinks #1299

-
- Fix invalid invocations of errors.LineTooLong #1335

-

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2 changes: 1 addition & 1 deletion aiohttp/errors.py
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Original file line number Diff line number Diff line change
Expand Up @@ -134,7 +134,7 @@ class LineTooLong(BadHttpMessage):

def __init__(self, line, limit='Unknown'):
super().__init__(
"got more than %s bytes when reading %s" % (limit, line))
"Got more than %s bytes when reading %s." % (limit, line))


class InvalidHeader(BadHttpMessage):
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12 changes: 8 additions & 4 deletions aiohttp/protocol.py
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Original file line number Diff line number Diff line change
Expand Up @@ -102,7 +102,9 @@ def parse_headers(self, lines):
header_length += len(line)
if header_length > self.max_field_size:
raise errors.LineTooLong(
'limit request headers fields size')
'request header field {}'.format(
bname.decode("utf8", "xmlcharrefreplace")),
self.max_field_size)
bvalue.append(line)

# next line
Expand All @@ -113,7 +115,9 @@ def parse_headers(self, lines):
else:
if header_length > self.max_field_size:
raise errors.LineTooLong(
'limit request headers fields size')
'request header field {}'.format(
bname.decode("utf8", "xmlcharrefreplace")),
self.max_field_size)

bvalue = bvalue.strip()

Expand Down Expand Up @@ -173,7 +177,7 @@ def __call__(self, out, buf):
raw_data = yield from buf.readuntil(
b'\r\n\r\n', self.max_headers)
except errors.LineLimitExceededParserError as exc:
raise errors.LineTooLong(exc.limit) from None
raise errors.LineTooLong('request header', exc.limit) from None
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this looks inconvenient: LineTooLong above is raised with single argument (formated string) and with two args here

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It's not, and the call here is wrong. Check out the constructor of LineTooLong (didn't change that one), it expects a "reason" and a limit that was exceeded. The way this was passed before resulted in a broken error message like "400 got more than Unknown bytes when reading 32768" when it should have read "400 got more than 32768 when reading request header".

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true, missed that one.


lines = raw_data.split(b'\r\n')

Expand Down Expand Up @@ -227,7 +231,7 @@ def __call__(self, out, buf):
raw_data = yield from buf.readuntil(
b'\r\n\r\n', self.max_line_size + self.max_headers)
except errors.LineLimitExceededParserError as exc:
raise errors.LineTooLong(exc.limit) from None
raise errors.LineTooLong('response header', exc.limit) from None

lines = raw_data.split(b'\r\n')

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11 changes: 9 additions & 2 deletions tests/test_http_parser.py
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Expand Up @@ -84,14 +84,21 @@ def test_max_field_size(self):
parser = protocol.HttpParser(8190, 32768, 5)
parser.parse_headers(
[b'', b'test: line data data\r\n', b'data\r\n', b'\r\n'])
self.assertIn("limit request headers fields size", str(cm.exception))
self.assertIn("request header field TEST", str(cm.exception))

def test_max_continuation_headers_size(self):
with self.assertRaises(errors.LineTooLong) as cm:
parser = protocol.HttpParser(8190, 32768, 5)
parser.parse_headers([b'', b'test: line\r\n',
b' test\r\n', b'\r\n'])
self.assertIn("limit request headers fields size", str(cm.exception))
self.assertIn("request header field TEST", str(cm.exception))

def test_max_header_size(self):
with self.assertRaises(errors.LineTooLong) as cm:
parser = protocol.HttpParser(5, 5, 5)
parser.parse_headers(
[b'', b'test: line data data\r\n', b'data\r\n', b'\r\n'])
self.assertIn("request header", str(cm.exception))

def test_invalid_header(self):
with self.assertRaisesRegex(
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