def read(self, size=-1):
# XXX CPython uses a more delicate logic here
ll_file = self.ll_file
if not ll_file:
raise ValueError("I/O operation on closed file")
if size < 0:
# read the entire contents
buf = lltype.malloc(rffi.CCHARP.TO, BASE_BUF_SIZE, flavor='raw')
try:
s = StringBuilder()
while True:
returned_size = c_fread(buf, 1, BASE_BUF_SIZE, ll_file)
returned_size = intmask(returned_size) # is between 0 and BASE_BUF_SIZE
if returned_size == 0:
if c_feof(ll_file):
# ok, finished
return s.build()
raise _error(ll_file)
s.append_charpsize(buf, returned_size)
finally:
lltype.free(buf, flavor='raw')
else:
raw_buf, gc_buf = rffi.alloc_buffer(size)
try:
returned_size = c_fread(raw_buf, 1, size, ll_file)
returned_size = intmask(returned_size) # is between 0 and size
if returned_size == 0:
if not c_feof(ll_file):
raise _error(ll_file)
s = rffi.str_from_buffer(raw_buf, gc_buf, size, returned_size)
finally:
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf)
return s
def recvfrom(self, buffersize, flags=0):
"""Like recv(buffersize, flags) but also return the sender's
address."""
read_bytes = -1
timeout = self._select(False)
if timeout == 1:
raise SocketTimeout
elif timeout == 0:
raw_buf, gc_buf = rffi.alloc_buffer(buffersize)
try:
address, addr_p, addrlen_p = self._addrbuf()
try:
read_bytes = _c.recvfrom(self.fd, raw_buf, buffersize, flags,
addr_p, addrlen_p)
addrlen = rffi.cast(lltype.Signed, addrlen_p[0])
finally:
lltype.free(addrlen_p, flavor='raw')
address.unlock()
if read_bytes >= 0:
if addrlen:
address.addrlen = addrlen
else:
address = None
data = rffi.str_from_buffer(raw_buf, gc_buf, buffersize, read_bytes)
return (data, address)
finally:
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf)
raise self.error_handler()
def _get_chunk(self, chunksize):
assert 0 <= chunksize <= self.current_size
raw_buf = self.raw_buf
gc_buf = self.gc_buf
s = rffi.str_from_buffer(raw_buf, gc_buf, self.current_size, chunksize)
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf)
self.current_size = 0
return s
def test_str_from_buffer(self):
"""gc-managed memory does not need to be freed"""
size = 50
raw_buf, gc_buf, case_num = rffi.alloc_buffer(size)
for i in range(size): raw_buf[i] = 'a'
rstr = rffi.str_from_buffer(raw_buf, gc_buf, case_num, size, size)
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf, case_num)
assert not leakfinder.ALLOCATED
def test_str_from_buffer(self):
"""gc-managed memory does not need to be freed"""
size = 50
raw_buf, gc_buf, case_num = rffi.alloc_buffer(size)
for i in range(size): raw_buf[i] = 'a'
rstr = rffi.str_from_buffer(raw_buf, gc_buf, case_num, size, size)
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf, case_num)
assert not leakfinder.ALLOCATED
def _get_chunk(self, chunksize):
assert 0 <= chunksize <= self.current_size
raw_buf = self.raw_buf
gc_buf = self.gc_buf
case_num = self.case_num
s = rffi.str_from_buffer(raw_buf, gc_buf, case_num, self.current_size,
chunksize)
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf, case_num)
self.current_size = 0
return s
def read(self, num_bytes=1024):
"""read([len]) -> string
Read up to len bytes from the SSL socket."""
count = libssl_SSL_pending(self.ssl)
if not count:
sockstate = check_socket_and_wait_for_timeout(self.space,
self.w_socket, False)
if sockstate == SOCKET_HAS_TIMED_OUT:
raise ssl_error(self.space, "The read operation timed out")
elif sockstate == SOCKET_TOO_LARGE_FOR_SELECT:
raise ssl_error(self.space, "Underlying socket too large for select().")
elif sockstate == SOCKET_HAS_BEEN_CLOSED:
if libssl_SSL_get_shutdown(self.ssl) == SSL_RECEIVED_SHUTDOWN:
return self.space.wrap('')
raise ssl_error(self.space, "Socket closed without SSL shutdown handshake")
raw_buf, gc_buf = rffi.alloc_buffer(num_bytes)
while True:
err = 0
count = libssl_SSL_read(self.ssl, raw_buf, num_bytes)
err = libssl_SSL_get_error(self.ssl, count)
if err == SSL_ERROR_WANT_READ:
sockstate = check_socket_and_wait_for_timeout(self.space,
self.w_socket, False)
elif err == SSL_ERROR_WANT_WRITE:
sockstate = check_socket_and_wait_for_timeout(self.space,
self.w_socket, True)
elif (err == SSL_ERROR_ZERO_RETURN and
libssl_SSL_get_shutdown(self.ssl) == SSL_RECEIVED_SHUTDOWN):
return self.space.wrap("")
else:
sockstate = SOCKET_OPERATION_OK
if sockstate == SOCKET_HAS_TIMED_OUT:
raise ssl_error(self.space, "The read operation timed out")
elif sockstate == SOCKET_IS_NONBLOCKING:
break
if err == SSL_ERROR_WANT_READ or err == SSL_ERROR_WANT_WRITE:
continue
else:
break
if count <= 0:
raise _ssl_seterror(self.space, self, count)
result = rffi.str_from_buffer(raw_buf, gc_buf, num_bytes, count)
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf)
return self.space.wrap(result)
def recv(self, buffersize, flags=0):
"""Receive up to buffersize bytes from the socket. For the optional
flags argument, see the Unix manual. When no data is available, block
until at least one byte is available or until the remote end is closed.
When the remote end is closed and all data is read, return the empty
string."""
timeout = self._select(False)
if timeout == 1:
raise SocketTimeout
elif timeout == 0:
raw_buf, gc_buf = rffi.alloc_buffer(buffersize)
try:
read_bytes = _c.socketrecv(self.fd, raw_buf, buffersize, flags)
if read_bytes >= 0:
return rffi.str_from_buffer(raw_buf, gc_buf, buffersize, read_bytes)
finally:
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf)
raise self.error_handler()
def readline(self):
if self.ll_file:
raw_buf, gc_buf = rffi.alloc_buffer(BASE_LINE_SIZE)
try:
c = self._readline1(raw_buf)
if c >= 0:
return rffi.str_from_buffer(raw_buf, gc_buf,
BASE_LINE_SIZE, c)
#
# this is the rare case: the line is longer than BASE_LINE_SIZE
s = StringBuilder()
while True:
s.append_charpsize(raw_buf, BASE_LINE_SIZE - 1)
c = self._readline1(raw_buf)
if c >= 0:
break
#
s.append_charpsize(raw_buf, c)
return s.build()
finally:
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf)
raise ValueError("I/O operation on closed file")
def test_leak(self):
size = 50
raw_buf, gc_buf = rffi.alloc_buffer(size)
for i in range(size): raw_buf[i] = 'a'
str = rffi.str_from_buffer(raw_buf, gc_buf, size, size)
rffi.keep_buffer_alive_until_here(raw_buf, gc_buf)
