def getaddrinfo(hostname,
servname,
family=_c.AF_UNSPEC,
socktype=0,
protocol=0,
flags=0,
address_to_fill=None):
if not hostname and not servname:
raise GAIError(EAI_NONAME)
# error checks for hints
if flags & ~AI_MASK:
raise GAIError(EAI_BADFLAGS)
if family not in (_c.AF_UNSPEC, _c.AF_INET):
raise GAIError(EAI_FAMILY)
if socktype == GAI_ANY:
if protocol == GAI_ANY:
pass
elif protocol == _c.IPPROTO_UDP:
socktype = _c.SOCK_DGRAM
elif protocol == _c.IPPROTO_TCP:
socktype = _c.SOCK_STREAM
else:
socktype = _c.SOCK_RAW
elif socktype == _c.SOCK_RAW:
pass
elif socktype == _c.SOCK_DGRAM:
if protocol not in (_c.IPPROTO_UDP, GAI_ANY):
raise GAIError(EAI_BADHINTS)
protocol = _c.IPPROTO_UDP
elif socktype == _c.SOCK_STREAM:
if protocol not in (_c.IPPROTO_TCP, GAI_ANY):
raise GAIError(EAI_BADHINTS)
protocol = _c.IPPROTO_TCP
else:
raise GAIError(EAI_SOCKTYPE)
port = GAI_ANY
# service port
if servname:
if str_isdigit(servname):
port = _c.htons(int(servname))
# On windows, python2.3 uses getattrinfo.c,
# python2.4 uses VC2003 implementation of getaddrinfo().
# if sys.version < (2, 4)
# socktype = _c.SOCK_DGRAM
# protocol = _c.IPPROTO_UDP
else:
if socktype == _c.SOCK_DGRAM:
proto = "udp"
elif socktype == _c.SOCK_STREAM:
proto = "tcp"
else:
proto = None
sp = _c.getservbyname(servname, proto)
if not sp:
raise GAIError(EAI_SERVICE)
port = sp.c_s_port
if socktype == GAI_ANY:
s_proto = rffi.charp2str(sp.c_s_proto)
if s_proto == "udp":
socktype = _c.SOCK_DGRAM
protocol = _c.IPPROTO_UDP
elif s_proto == "tcp":
socktype = _c.SOCK_STREAM
protocol = _c.IPPROTO_TCP
else:
raise GAIError(EAI_PROTOCOL)
# hostname == NULL
# passive socket -> anyaddr (0.0.0.0 or ::)
# non-passive socket -> localhost (127.0.0.1 or ::1)
if not hostname:
result = []
if family in (_c.AF_UNSPEC, _c.AF_INET):
sin = rffi.make(_c.sockaddr_in)
try:
rffi.setintfield(sin, 'c_sin_family', _c.AF_INET)
rffi.setintfield(sin, 'c_sin_port', port)
if flags & _c.AI_PASSIVE:
s_addr = 0x0 # addrany
else:
s_addr = 0x0100007f # loopback
rffi.setintfield(sin.c_sin_addr, 'c_s_addr', s_addr)
addr = make_address(rffi.cast(_c.sockaddr_ptr, sin),
rffi.sizeof(_c.sockaddr_in),
address_to_fill)
result.append((
_c.AF_INET,
socktype,
protocol,
"", # xxx canonname meaningless? "anyaddr"
addr))
finally:
lltype.free(sin, flavor='raw')
if not result:
raise GAIError(EAI_FAMILY)
return result
# hostname as numeric name
if family in (_c.AF_UNSPEC, _c.AF_INET):
packedaddr = _c.inet_addr(hostname)
if packedaddr != rffi.cast(rffi.UINT, INADDR_NONE):
v4a = rffi.cast(lltype.Unsigned, _c.ntohl(packedaddr))
if (v4a & r_uint(0xf0000000) == r_uint(0xe0000000)
or # IN_MULTICAST()
v4a & r_uint(0xe0000000)
== r_uint(0xe0000000)): # IN_EXPERIMENTAL()
flags &= ~_c.AI_CANONNAME
v4a >>= 24 # = IN_CLASSA_NSHIFT
if v4a == r_uint(0) or v4a == r_uint(127): # = IN_LOOPBACKNET
flags &= ~_c.AI_CANONNAME
sin = rffi.make(_c.sockaddr_in)
try:
rffi.setintfield(sin, 'c_sin_family', _c.AF_INET)
rffi.setintfield(sin, 'c_sin_port', port)
rffi.setintfield(sin.c_sin_addr, 'c_s_addr', packedaddr)
addr = make_address(rffi.cast(_c.sockaddr_ptr, sin),
rffi.sizeof(_c.sockaddr_in),
address_to_fill)
finally:
lltype.free(sin, flavor='raw')
if not flags & _c.AI_CANONNAME:
canonname = ""
else:
# getaddrinfo() is a name->address translation function,
# and it looks strange that we do addr->name translation
# here.
# This is what python2.3 did on Windows:
# if sys.version < (2, 4):
# canonname = get_name(hostname, sin.sin_addr,
# sizeof(_c.in_addr))
canonname = hostname
return [(_c.AF_INET, socktype, protocol, canonname, addr)]
if flags & _c.AI_NUMERICHOST:
raise GAIError(EAI_NONAME)
# hostname as alphabetical name
result = get_addr(hostname, socktype, protocol, port, address_to_fill)
if result:
return result
raise GAIError(EAI_FAIL)
def getservbyname(name, proto=None):
servent = _c.getservbyname(name, proto)
if not servent:
raise RSocketError("service/proto not found")
return ntohs(servent.c_s_port)
def getaddrinfo(hostname, servname,
family=_c.AF_UNSPEC, socktype=0,
protocol=0, flags=0,
address_to_fill=None):
if not hostname and not servname:
raise GAIError(EAI_NONAME)
# error checks for hints
if flags & ~AI_MASK:
raise GAIError(EAI_BADFLAGS)
if family not in (_c.AF_UNSPEC, _c.AF_INET):
raise GAIError(EAI_FAMILY)
if socktype == GAI_ANY:
if protocol == GAI_ANY:
pass
elif protocol == _c.IPPROTO_UDP:
socktype = _c.SOCK_DGRAM
elif protocol == _c.IPPROTO_TCP:
socktype = _c.SOCK_STREAM
else:
socktype = _c.SOCK_RAW
elif socktype == _c.SOCK_RAW:
pass
elif socktype == _c.SOCK_DGRAM:
if protocol not in (_c.IPPROTO_UDP, GAI_ANY):
raise GAIError(EAI_BADHINTS)
protocol = _c.IPPROTO_UDP
elif socktype == _c.SOCK_STREAM:
if protocol not in (_c.IPPROTO_TCP, GAI_ANY):
raise GAIError(EAI_BADHINTS)
protocol = _c.IPPROTO_TCP
else:
raise GAIError(EAI_SOCKTYPE)
port = GAI_ANY
# service port
if servname:
if str_isdigit(servname):
port = _c.htons(int(servname))
# On windows, python2.3 uses getattrinfo.c,
# python2.4 uses VC2003 implementation of getaddrinfo().
# if sys.version < (2, 4)
# socktype = _c.SOCK_DGRAM
# protocol = _c.IPPROTO_UDP
else:
if socktype == _c.SOCK_DGRAM:
proto = "udp"
elif socktype == _c.SOCK_STREAM:
proto = "tcp"
else:
proto = None
sp = _c.getservbyname(servname, proto)
if not sp:
raise GAIError(EAI_SERVICE)
port = sp.c_s_port
if socktype == GAI_ANY:
s_proto = rffi.charp2str(sp.c_s_proto)
if s_proto == "udp":
socktype = _c.SOCK_DGRAM
protocol = _c.IPPROTO_UDP
elif s_proto == "tcp":
socktype = _c.SOCK_STREAM
protocol = _c.IPPROTO_TCP
else:
raise GAIError(EAI_PROTOCOL)
# hostname == NULL
# passive socket -> anyaddr (0.0.0.0 or ::)
# non-passive socket -> localhost (127.0.0.1 or ::1)
if not hostname:
result = []
if family in (_c.AF_UNSPEC, _c.AF_INET):
sin = rffi.make(_c.sockaddr_in)
try:
rffi.setintfield(sin, 'c_sin_family', _c.AF_INET)
rffi.setintfield(sin, 'c_sin_port', port)
if flags & _c.AI_PASSIVE:
s_addr = 0x0 # addrany
else:
s_addr = 0x0100007f # loopback
rffi.setintfield(sin.c_sin_addr, 'c_s_addr', s_addr)
addr = make_address(rffi.cast(_c.sockaddr_ptr, sin),
rffi.sizeof(_c.sockaddr_in),
address_to_fill)
result.append((_c.AF_INET, socktype, protocol, "", # xxx canonname meaningless? "anyaddr"
addr))
finally:
lltype.free(sin, flavor='raw')
if not result:
raise GAIError(EAI_FAMILY)
return result
# hostname as numeric name
if family in (_c.AF_UNSPEC, _c.AF_INET):
packedaddr = _c.inet_addr(hostname)
if packedaddr != rffi.cast(rffi.UINT, INADDR_NONE):
v4a = rffi.cast(lltype.Unsigned, _c.ntohl(packedaddr))
if (v4a & r_uint(0xf0000000) == r_uint(0xe0000000) or # IN_MULTICAST()
v4a & r_uint(0xe0000000) == r_uint(0xe0000000)): # IN_EXPERIMENTAL()
flags &= ~_c.AI_CANONNAME
v4a >>= 24 # = IN_CLASSA_NSHIFT
if v4a == r_uint(0) or v4a == r_uint(127): # = IN_LOOPBACKNET
flags &= ~_c.AI_CANONNAME
sin = rffi.make(_c.sockaddr_in)
try:
rffi.setintfield(sin, 'c_sin_family', _c.AF_INET)
rffi.setintfield(sin, 'c_sin_port', port)
rffi.setintfield(sin.c_sin_addr, 'c_s_addr', packedaddr)
addr = make_address(rffi.cast(_c.sockaddr_ptr, sin),
rffi.sizeof(_c.sockaddr_in),
address_to_fill)
finally:
lltype.free(sin, flavor='raw')
if not flags & _c.AI_CANONNAME:
canonname = ""
else:
# getaddrinfo() is a name->address translation function,
# and it looks strange that we do addr->name translation
# here.
# This is what python2.3 did on Windows:
# if sys.version < (2, 4):
# canonname = get_name(hostname, sin.sin_addr,
# sizeof(_c.in_addr))
canonname = hostname
return [(_c.AF_INET, socktype, protocol, canonname, addr)]
if flags & _c.AI_NUMERICHOST:
raise GAIError(EAI_NONAME)
# hostname as alphabetical name
result = get_addr(hostname, socktype, protocol, port, address_to_fill)
if result:
return result
raise GAIError(EAI_FAIL)
def getservbyname(name, proto=None):
servent = _c.getservbyname(name, proto)
if not servent:
raise RSocketError("service/proto not found")
return ntohs(servent.c_s_port)