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Add check for format limits.

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This commit is contained in:
INADA Naoki 2014-03-26 03:03:18 +09:00
parent e7f87d9d41
commit c60ab28ee7
1 changed files with 26 additions and 4 deletions
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30
msgpack/_packer.pyx
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@ -135,6 +135,8 @@ cdef class Packer(object):
else:
ret = msgpack_pack_false(&self.pk)
elif PyLong_Check(o):
# PyInt_Check(long) is True for Python 3.
# Sow we should test long before int.
if o > 0:
ullval = o
ret = msgpack_pack_unsigned_long_long(&self.pk, ullval)
@ -152,8 +154,10 @@ cdef class Packer(object):
dval = o
ret = msgpack_pack_double(&self.pk, dval)
elif PyBytes_Check(o):
rawval = o
L = len(o)
if L > (2**32)-1:
raise ValueError("bytes is too large")
rawval = o
ret = msgpack_pack_bin(&self.pk, L)
if ret == 0:
ret = msgpack_pack_raw_body(&self.pk, rawval, L)
@ -161,13 +165,19 @@ cdef class Packer(object):
if not self.encoding:
raise TypeError("Can't encode unicode string: no encoding is specified")
o = PyUnicode_AsEncodedString(o, self.encoding, self.unicode_errors)
L = len(o)
if L > (2**32)-1:
raise ValueError("dict is too large")
rawval = o
ret = msgpack_pack_raw(&self.pk, len(o))
if ret == 0:
ret = msgpack_pack_raw_body(&self.pk, rawval, len(o))
elif PyDict_CheckExact(o):
d = <dict>o
ret = msgpack_pack_map(&self.pk, len(d))
L = len(d)
if L > (2**32)-1:
raise ValueError("dict is too large")
ret = msgpack_pack_map(&self.pk, L)
if ret == 0:
for k, v in d.iteritems():
ret = self._pack(k, nest_limit-1)
@ -175,7 +185,10 @@ cdef class Packer(object):
ret = self._pack(v, nest_limit-1)
if ret != 0: break
elif PyDict_Check(o):
ret = msgpack_pack_map(&self.pk, len(o))
L = len(o)
if L > (2**32)-1:
raise ValueError("dict is too large")
ret = msgpack_pack_map(&self.pk, L)
if ret == 0:
for k, v in o.items():
ret = self._pack(k, nest_limit-1)
@ -187,10 +200,15 @@ cdef class Packer(object):
longval = o.code
rawval = o.data
L = len(o.data)
if L > (2**32)-1:
raise ValueError("EXT data is too large")
ret = msgpack_pack_ext(&self.pk, longval, L)
ret = msgpack_pack_raw_body(&self.pk, rawval, L)
elif PyTuple_Check(o) or PyList_Check(o):
ret = msgpack_pack_array(&self.pk, len(o))
L = len(o)
if L > (2**32)-1:
raise ValueError("list is too large")
ret = msgpack_pack_array(&self.pk, L)
if ret == 0:
for v in o:
ret = self._pack(v, nest_limit-1)
@ -220,6 +238,8 @@ cdef class Packer(object):
msgpack_pack_raw_body(&self.pk, data, len(data))
def pack_array_header(self, size_t size):
if size >= (2**32-1):
raise ValueError
cdef int ret = msgpack_pack_array(&self.pk, size)
if ret == -1:
raise MemoryError
@ -231,6 +251,8 @@ cdef class Packer(object):
return buf
def pack_map_header(self, size_t size):
if size >= (2**32-1):
raise ValueError
cdef int ret = msgpack_pack_map(&self.pk, size)
if ret == -1:
raise MemoryError