def from_bytes(cls: t.Type[T], data: bytes) -> T:
if len(data) < cls.sizeof():
raise Exception("data too small", data)
struct = ffi.cast('struct sockaddr_in*', ffi.from_buffer(data))
cls.check_family(AF(struct.sin_family))
return cls(socket.ntohs(struct.sin_port),
socket.ntohl(struct.sin_addr.s_addr))
def from_bytes(cls: t.Type[T], data: bytes) -> T:
if len(data) < cls.sizeof():
raise Exception("data too small", data)
struct = ffi.cast('struct sockaddr_in6*', ffi.from_buffer(data))
cls.check_family(AF(struct.sin6_family))
return cls(socket.ntohs(struct.sin6_port), ipaddress.IPv6Address(bytes(struct.sin6_addr.s6_addr)),
struct.sin6_flowinfo, struct.sin6_scope_id)
def from_bytes(cls: t.Type[T], data: bytes) -> T:
header = ffi.sizeof('sa_family_t')
if len(data) < header:
raise Exception("data too smalllll", data)
struct = ffi.cast('struct sockaddr_un*', ffi.from_buffer(data))
cls.check_family(AF(struct.sun_family))
if len(data) == header:
# unnamed socket, name is empty
length = 0
elif struct.sun_path[0] == b'\0':
# abstract socket, entire buffer is part of path
length = len(data) - header
else:
# TODO handle the case where there's no null terminator
# pathname socket, path is null-terminated
length = lib.strlen(struct.sun_path)
return cls(bytes(ffi.buffer(struct.sun_path, length)))
def from_bytes(cls: t.Type[T], data: bytes) -> T:
if len(data) < cls.sizeof():
raise Exception("data too small", data)
struct = ffi.cast('struct sockaddr_nl*', ffi.from_buffer(data))
cls.check_family(AF(struct.nl_family))
return cls(struct.nl_pid, struct.nl_groups)