def test_dumpstruct(self):
mmsghdr = MMSGHDR() # nested struct
sigact = SIGACTION() # flat struct
with patch("sys.stdout", new=StringIO()) as stdout:
util.dumpstruct(mmsghdr)
self.assertIn("MSGHDR object at", stdout.getvalue())
self.assertIn("msg_name: 0x0", stdout.getvalue())
self.assertIn("msg_len: 0x0", stdout.getvalue())
util.dumpstruct(sigact)
self.assertIn("sa_handler: 0x0", stdout.getvalue())
self.assertIn("sa_mask: 0x0", stdout.getvalue())
def dumpstruct(self,
structure: ctypes.Structure,
indent_level: int = 0) -> None:
"""
Prints a string representing the data held in a struct.
Args:
structure: The structure to print out.
indent_level: Number of indents when printing output. Makes
for easier reading. Defaults to no indentation.
"""
util.dumpstruct(structure, indent_level=indent_level)
def _sendmsg(k, p, sockfd, msghdr, flags):
dumpstruct(msghdr)
iovec_array = p.memory.readstructarray(msghdr.msg_iov, msghdr.msg_iovlen,
structs.IOVEC())
gathered_results = b""
for iovec in iovec_array:
gathered_results += p.memory.read(iovec.iov_base, iovec.iov_len)
sent_len = _send(k, p, sockfd, gathered_results, flags)
return sent_len
def sys__sysctl(sm, p):
args = sm.get_args([("struct __sysctl_args*", "sys_args")])
__sysctl_args = ptr2struct(sm.z, args.sys_args, __SYSCTL_ARGS)
dumpstruct(__sysctl_args)
return 0