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Prune unneeded ctypes material from pxe

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Moving to .recvmsg from python socket eliminates
most of the ctypes requirement. Still using it for sendto.
This commit is contained in:
Jarrod Johnson 2024-05-09 09:46:01 -04:00
parent e1e3244af6
commit 2e30f7fb86
1 changed files with 1 additions and 41 deletions
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42
confluent_server/confluent/discovery/protocols/pxe.py
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@ -80,33 +80,9 @@ class iovec(ctypes.Structure): # from uio.h
_fields_ = [('iov_base', ctypes.c_void_p),
('iov_len', ctypes.c_size_t)]
class msghdr(ctypes.Structure): # from bits/socket.h
_fields_ = [('msg_name', ctypes.c_void_p),
('msg_namelen', ctypes.c_uint),
('msg_iov', ctypes.POINTER(iovec)),
('msg_iovlen', ctypes.c_size_t),
('msg_control', ctypes.c_void_p),
('msg_controllen', ctypes.c_size_t),
('msg_flags', ctypes.c_int)]
class cmsghdr(ctypes.Structure): # also from bits/socket.h
_fields_ = [('cmsg_len', ctypes.c_size_t),
('cmsg_level', ctypes.c_int),
('cmsg_type', ctypes.c_int)]
# ignore the __extension__
class in_addr(ctypes.Structure):
_fields_ = [('s_addr', ctypes.c_uint32)]
class in_pktinfo(ctypes.Structure): # from bits/in.h
_fields_ = [('ipi_ifindex', ctypes.c_int),
('ipi_spec_dst', in_addr),
('ipi_addr', in_addr)]
class sockaddr_in(ctypes.Structure):
_fields_ = [('sin_family', ctypes.c_ushort), # per bits/sockaddr.h
('sin_port', ctypes.c_uint16), # per netinet/in.h
('sin_addr', in_addr)]
sendto = libc.sendto
@ -114,9 +90,7 @@ sendto.argtypes = [ctypes.c_int, ctypes.c_void_p, ctypes.c_size_t,
ctypes.c_int, ctypes.POINTER(sockaddr_ll),
ctypes.c_size_t]
sendto.restype = ctypes.c_size_t
recvmsg = libc.recvmsg
recvmsg.argtypes = [ctypes.c_int, ctypes.POINTER(msghdr), ctypes.c_int]
recvmsg.restype = ctypes.c_size_t
pkttype = ctypes.c_char * 2048
@ -143,20 +117,6 @@ def get_bcastaddr(idx):
IP_PKTINFO = 8
def CMSG_ALIGN(length): # bits/socket.h
ret = (length + ctypes.sizeof(ctypes.c_size_t) - 1
& ~(ctypes.sizeof(ctypes.c_size_t) - 1))
return ctypes.c_size_t(ret)
def CMSG_SPACE(length): # bits/socket.h
ret = CMSG_ALIGN(length).value + CMSG_ALIGN(ctypes.sizeof(cmsghdr)).value
return ctypes.c_size_t(ret)
cmsgtype = ctypes.c_char * CMSG_SPACE(ctypes.sizeof(in_pktinfo)).value
cmsgsize = CMSG_SPACE(ctypes.sizeof(in_pktinfo)).value
pxearchs = {
b'\x00\x00': 'bios-x86',
b'\x00\x07': 'uefi-x64',