diff options
Diffstat (limited to 'scripts/external_libs/dpkt-1.8.6/dpkt/icmp.py')
| -rw-r--r-- | scripts/external_libs/dpkt-1.8.6/dpkt/icmp.py | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/scripts/external_libs/dpkt-1.8.6/dpkt/icmp.py b/scripts/external_libs/dpkt-1.8.6/dpkt/icmp.py new file mode 100644 index 00000000..37cdec05 --- /dev/null +++ b/scripts/external_libs/dpkt-1.8.6/dpkt/icmp.py @@ -0,0 +1,122 @@ +# $Id: icmp.py 45 2007-08-03 00:05:22Z jon.oberheide $ + +"""Internet Control Message Protocol.""" + +import dpkt, ip + +# Types (icmp_type) and codes (icmp_code) - +# http://www.iana.org/assignments/icmp-parameters + +ICMP_CODE_NONE = 0 # for types without codes +ICMP_ECHOREPLY = 0 # echo reply +ICMP_UNREACH = 3 # dest unreachable, codes: +ICMP_UNREACH_NET = 0 # bad net +ICMP_UNREACH_HOST = 1 # bad host +ICMP_UNREACH_PROTO = 2 # bad protocol +ICMP_UNREACH_PORT = 3 # bad port +ICMP_UNREACH_NEEDFRAG = 4 # IP_DF caused drop +ICMP_UNREACH_SRCFAIL = 5 # src route failed +ICMP_UNREACH_NET_UNKNOWN = 6 # unknown net +ICMP_UNREACH_HOST_UNKNOWN = 7 # unknown host +ICMP_UNREACH_ISOLATED = 8 # src host isolated +ICMP_UNREACH_NET_PROHIB = 9 # for crypto devs +ICMP_UNREACH_HOST_PROHIB = 10 # ditto +ICMP_UNREACH_TOSNET = 11 # bad tos for net +ICMP_UNREACH_TOSHOST = 12 # bad tos for host +ICMP_UNREACH_FILTER_PROHIB = 13 # prohibited access +ICMP_UNREACH_HOST_PRECEDENCE = 14 # precedence error +ICMP_UNREACH_PRECEDENCE_CUTOFF = 15 # precedence cutoff +ICMP_SRCQUENCH = 4 # packet lost, slow down +ICMP_REDIRECT = 5 # shorter route, codes: +ICMP_REDIRECT_NET = 0 # for network +ICMP_REDIRECT_HOST = 1 # for host +ICMP_REDIRECT_TOSNET = 2 # for tos and net +ICMP_REDIRECT_TOSHOST = 3 # for tos and host +ICMP_ALTHOSTADDR = 6 # alternate host address +ICMP_ECHO = 8 # echo service +ICMP_RTRADVERT = 9 # router advertise, codes: +ICMP_RTRADVERT_NORMAL = 0 # normal +ICMP_RTRADVERT_NOROUTE_COMMON = 16 # selective routing +ICMP_RTRSOLICIT = 10 # router solicitation +ICMP_TIMEXCEED = 11 # time exceeded, code: +ICMP_TIMEXCEED_INTRANS = 0 # ttl==0 in transit +ICMP_TIMEXCEED_REASS = 1 # ttl==0 in reass +ICMP_PARAMPROB = 12 # ip header bad +ICMP_PARAMPROB_ERRATPTR = 0 # req. opt. absent +ICMP_PARAMPROB_OPTABSENT = 1 # req. opt. absent +ICMP_PARAMPROB_LENGTH = 2 # bad length +ICMP_TSTAMP = 13 # timestamp request +ICMP_TSTAMPREPLY = 14 # timestamp reply +ICMP_INFO = 15 # information request +ICMP_INFOREPLY = 16 # information reply +ICMP_MASK = 17 # address mask request +ICMP_MASKREPLY = 18 # address mask reply +ICMP_TRACEROUTE = 30 # traceroute +ICMP_DATACONVERR = 31 # data conversion error +ICMP_MOBILE_REDIRECT = 32 # mobile host redirect +ICMP_IP6_WHEREAREYOU = 33 # IPv6 where-are-you +ICMP_IP6_IAMHERE = 34 # IPv6 i-am-here +ICMP_MOBILE_REG = 35 # mobile registration req +ICMP_MOBILE_REGREPLY = 36 # mobile registration reply +ICMP_DNS = 37 # domain name request +ICMP_DNSREPLY = 38 # domain name reply +ICMP_SKIP = 39 # SKIP +ICMP_PHOTURIS = 40 # Photuris +ICMP_PHOTURIS_UNKNOWN_INDEX = 0 # unknown sec index +ICMP_PHOTURIS_AUTH_FAILED = 1 # auth failed +ICMP_PHOTURIS_DECOMPRESS_FAILED = 2 # decompress failed +ICMP_PHOTURIS_DECRYPT_FAILED = 3 # decrypt failed +ICMP_PHOTURIS_NEED_AUTHN = 4 # no authentication +ICMP_PHOTURIS_NEED_AUTHZ = 5 # no authorization +ICMP_TYPE_MAX = 40 + +class ICMP(dpkt.Packet): + __hdr__ = ( + ('type', 'B', 8), + ('code', 'B', 0), + ('sum', 'H', 0) + ) + class Echo(dpkt.Packet): + __hdr__ = (('id', 'H', 0), ('seq', 'H', 0)) + class Quote(dpkt.Packet): + __hdr__ = (('pad', 'I', 0),) + def unpack(self, buf): + dpkt.Packet.unpack(self, buf) + self.data = self.ip = ip.IP(self.data) + class Unreach(Quote): + __hdr__ = (('pad', 'H', 0), ('mtu', 'H', 0)) + class Quench(Quote): + pass + class Redirect(Quote): + __hdr__ = (('gw', 'I', 0),) + class ParamProbe(Quote): + __hdr__ = (('ptr', 'B', 0), ('pad1', 'B', 0), ('pad2', 'H', 0)) + class TimeExceed(Quote): + pass + + _typesw = { 0:Echo, 3:Unreach, 4:Quench, 5:Redirect, 8:Echo, + 11:TimeExceed } + + def unpack(self, buf): + dpkt.Packet.unpack(self, buf) + try: + self.data = self._typesw[self.type](self.data) + setattr(self, self.data.__class__.__name__.lower(), self.data) + except (KeyError, dpkt.UnpackError): + pass + + def __str__(self): + if not self.sum: + self.sum = dpkt.in_cksum(dpkt.Packet.__str__(self)) + return dpkt.Packet.__str__(self) + +if __name__ == '__main__': + import unittest + + class ICMPTestCase(unittest.TestCase): + def test_ICMP(self): + s = '\x03\x0a\x6b\x19\x00\x00\x00\x00\x45\x00\x00\x28\x94\x1f\x00\x00\xe3\x06\x99\xb4\x23\x2b\x24\x00\xde\x8e\x84\x42\xab\xd1\x00\x50\x00\x35\xe1\x29\x20\xd9\x00\x00\x00\x22\x9b\xf0\xe2\x04\x65\x6b' + icmp = ICMP(s) + self.failUnless(str(icmp) == s) + + unittest.main() |