Chunked readline fixes by schmir, ported from gevent by redbo.
This commit is contained in:
Ryan Williams
@@ -90,38 +90,53 @@ class Input(object):
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self.position += len(read)
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return read
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def _chunked_read(self, rfile, length=None):
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def _chunked_read(self, rfile, length=None, use_readline=False):
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if self.wfile is not None:
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## 100 Continue
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self.wfile.write(self.wfile_line)
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self.wfile = None
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self.wfile_line = None
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try:
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if length == 0:
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return ""
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if length < 0:
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length = None
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if use_readline:
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reader = self.rfile.readline
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else:
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reader = self.rfile.read
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response = []
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try:
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if length is None:
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if self.chunk_length > self.position:
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response.append(rfile.read(self.chunk_length - self.position))
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while self.chunk_length != 0:
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self.chunk_length = int(rfile.readline(), 16)
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response.append(rfile.read(self.chunk_length))
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rfile.readline()
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else:
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while length > 0 and self.chunk_length != 0:
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if self.chunk_length > self.position:
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response.append(rfile.read(
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min(self.chunk_length - self.position, length)))
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last_read = len(response[-1])
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if last_read == 0:
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break
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length -= last_read
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self.position += last_read
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maxreadlen = self.chunk_length - self.position
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if length is not None and length < maxreadlen:
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maxreadlen = length
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if maxreadlen > 0:
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data = reader(maxreadlen)
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if not data:
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self.chunk_length = 0
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raise IOError("unexpected end of file while parsing chunked data")
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datalen = len(data)
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response.append(data)
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self.position += datalen
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if self.chunk_length == self.position:
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rfile.readline()
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if length is not None:
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length -= datalen
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if length == 0:
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break
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if use_readline and data[-1] == "\n":
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break
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else:
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self.chunk_length = int(rfile.readline(), 16)
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self.chunk_length = int(rfile.readline().split(";", 1)[0], 16)
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self.position = 0
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if not self.chunk_length:
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if self.chunk_length == 0:
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rfile.readline()
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except greenio.SSL.ZeroReturnError:
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pass
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@@ -133,7 +148,10 @@ class Input(object):
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return self._do_read(self.rfile.read, length)
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def readline(self, size=None):
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return self._do_read(self.rfile.readline)
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if self.chunked_input:
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return self._chunked_read(self.rfile, size, True)
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else:
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return self._do_read(self.rfile.readline, size)
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def readlines(self, hint=None):
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return self._do_read(self.rfile.readlines, hint)
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@@ -348,8 +366,9 @@ class HttpProtocol(BaseHTTPServer.BaseHTTPRequestHandler):
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finally:
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if hasattr(result, 'close'):
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result.close()
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if (self.environ['eventlet.input'].position
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< self.environ.get('CONTENT_LENGTH', 0)):
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if (self.environ['eventlet.input'].chunked_input or
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self.environ['eventlet.input'].position \
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< self.environ['eventlet.input'].content_length):
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## Read and discard body if there was no pending 100-continue
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if not self.environ['eventlet.input'].wfile:
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while self.environ['eventlet.input'].read(MINIMUM_CHUNK_SIZE):
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@@ -145,7 +145,6 @@ def read_http(sock):
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if CONTENT_LENGTH in headers:
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num = int(headers[CONTENT_LENGTH])
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body = fd.read(num)
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#print body
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else:
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# read until EOF
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body = fd.read()
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@@ -845,8 +844,13 @@ class TestHttpd(_TestBase):
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def test_aborted_chunked_post(self):
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read_content = event.Event()
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blew_up = [False]
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def chunk_reader(env, start_response):
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try:
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content = env['wsgi.input'].read(1024)
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except IOError:
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blew_up[0] = True
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content = 'ok'
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read_content.send(content)
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start_response('200 OK', [('Content-Type', 'text/plain')])
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return [content]
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@@ -863,7 +867,8 @@ class TestHttpd(_TestBase):
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sock.close()
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# the test passes if we successfully get here, and read all the data
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# in spite of the early close
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self.assertEqual(read_content.wait(), expected_body)
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self.assertEqual(read_content.wait(), 'ok')
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self.assert_(blew_up[0])
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def read_headers(sock):
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fd = sock.makefile()
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@@ -908,7 +913,6 @@ class IterableAlreadyHandledTest(_TestBase):
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fd.flush()
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response_line, headers = read_headers(sock)
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print headers
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self.assertEqual(response_line, 'HTTP/1.1 200 OK\r\n')
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self.assert_('connection' not in headers)
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fd.write('GET / HTTP/1.1\r\nHost: localhost\r\nConnection: close\r\n\r\n')
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@@ -918,6 +922,125 @@ class IterableAlreadyHandledTest(_TestBase):
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self.assertEqual(headers.get('transfer-encoding'), 'chunked')
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self.assertEqual(body, '0\r\n\r\n') # Still coming back chunked
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class TestChunkedInput(_TestBase):
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dirt = ""
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validator = None
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def application(self, env, start_response):
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input = env['wsgi.input']
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response = []
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pi = env["PATH_INFO"]
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if pi=="/short-read":
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d=input.read(10)
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response = [d]
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elif pi=="/lines":
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for x in input:
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response.append(x)
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elif pi=="/ping":
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input.read()
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response.append("pong")
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else:
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raise RuntimeError("bad path")
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start_response('200 OK', [('Content-Type', 'text/plain')])
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return response
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def connect(self):
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return eventlet.connect(('localhost', self.port))
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def set_site(self):
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self.site = Site()
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self.site.application = self.application
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def chunk_encode(self, chunks, dirt=None):
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if dirt is None:
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dirt = self.dirt
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b = ""
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for c in chunks:
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b += "%x%s\r\n%s\r\n" % (len(c), dirt, c)
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return b
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def body(self, dirt=None):
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return self.chunk_encode(["this", " is ", "chunked", "\nline", " 2", "\n", "line3", ""], dirt=dirt)
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def ping(self, fd):
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fd.sendall("GET /ping HTTP/1.1\r\n\r\n")
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self.assertEquals(read_http(fd)[-1], "pong")
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def test_short_read_with_content_length(self):
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body = self.body()
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req = "POST /short-read HTTP/1.1\r\ntransfer-encoding: Chunked\r\nContent-Length:1000\r\n\r\n" + body
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fd = self.connect()
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fd.sendall(req)
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self.assertEquals(read_http(fd)[-1], "this is ch")
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self.ping(fd)
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def test_short_read_with_zero_content_length(self):
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body = self.body()
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req = "POST /short-read HTTP/1.1\r\ntransfer-encoding: Chunked\r\nContent-Length:0\r\n\r\n" + body
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fd = self.connect()
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fd.sendall(req)
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self.assertEquals(read_http(fd)[-1], "this is ch")
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self.ping(fd)
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def test_short_read(self):
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body = self.body()
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req = "POST /short-read HTTP/1.1\r\ntransfer-encoding: Chunked\r\n\r\n" + body
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fd = self.connect()
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fd.sendall(req)
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self.assertEquals(read_http(fd)[-1], "this is ch")
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self.ping(fd)
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def test_dirt(self):
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body = self.body(dirt="; here is dirt\0bla")
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req = "POST /ping HTTP/1.1\r\ntransfer-encoding: Chunked\r\n\r\n" + body
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fd = self.connect()
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fd.sendall(req)
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self.assertEquals(read_http(fd)[-1], "pong")
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self.ping(fd)
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def test_chunked_readline(self):
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body = self.body()
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req = "POST /lines HTTP/1.1\r\nContent-Length: %s\r\ntransfer-encoding: Chunked\r\n\r\n%s" % (len(body), body)
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fd = self.connect()
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fd.sendall(req)
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self.assertEquals(read_http(fd)[-1], 'this is chunked\nline 2\nline3')
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def test_close_before_finished(self):
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import signal
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got_signal = []
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def handler(*args):
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got_signal.append(1)
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raise KeyboardInterrupt()
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signal.signal(signal.SIGALRM, handler)
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signal.alarm(1)
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try:
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body = '4\r\nthi'
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req = "POST /short-read HTTP/1.1\r\ntransfer-encoding: Chunked\r\n\r\n" + body
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fd = self.connect()
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fd.sendall(req)
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fd.close()
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eventlet.sleep(0.0)
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finally:
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signal.alarm(0)
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signal.signal(signal.SIGALRM, signal.SIG_DFL)
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assert not got_signal, "caught alarm signal. infinite loop detected."
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if __name__ == '__main__':
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