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import socket, struct
# Python socket module does not have this constant
DIOCNATLOOK = 23
class Resolver:
def original_addr(self, csock):
"""
The following sttruct defintions are plucked from the current XNU source, found here:
http://www.opensource.apple.com/source/xnu/xnu-1699.26.8/bsd/net/pfvar.h
union pf_state_xport {
u_int16_t port;
u_int16_t call_id;
u_int32_t spi;
};
struct pf_addr {
union {
struct in_addr v4;
struct in6_addr v6;
u_int8_t addr8[16];
u_int16_t addr16[8];
u_int32_t addr32[4];
} pfa;
struct pfioc_natlook {
struct pf_addr saddr;
struct pf_addr daddr;
struct pf_addr rsaddr;
struct pf_addr rdaddr;
#ifndef NO_APPLE_EXTENSIONS
union pf_state_xport sxport;
union pf_state_xport dxport;
union pf_state_xport rsxport;
union pf_state_xport rdxport;
sa_family_t af;
u_int8_t proto;
u_int8_t proto_variant;
u_int8_t direction;
#else
u_int16_t sport;
u_int16_t dport;
u_int16_t rsport;
u_int16_t rdport;
sa_family_t af;
u_int8_t proto;
u_int8_t direction;
#endif
};
"""
pass
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