本文整理汇总了Python中scapy.utils.checksum方法的典型用法代码示例。如果您正苦于以下问题：Python utils.checksum方法的具体用法？Python utils.checksum怎么用？Python utils.checksum使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类scapy.utils的用法示例。
在下文中一共展示了utils.checksum方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: post_build
# 需要导入模块: from scapy import utils [as 别名]
# 或者: from scapy.utils import checksum [as 别名]
def post_build(self, p, pay):
p += pay
dataofs = self.dataofs
if dataofs is None:
dataofs = 5+((len(self.get_field("options").i2m(self,self.options))+3)/4)
p = p[:12]+chr((dataofs << 4) | ord(p[12])&0x0f)+p[13:]
if self.chksum is None:
if isinstance(self.underlayer, IP):
if self.underlayer.len is not None:
ln = self.underlayer.len-20
else:
ln = len(p)
psdhdr = struct.pack("!4s4sHH",
inet_aton(self.underlayer.src),
inet_aton(self.underlayer.dst),
self.underlayer.proto,
ln)
ck=checksum(psdhdr+p)
p = p[:16]+struct.pack("!H", ck)+p[18:]
elif conf.ipv6_enabled and isinstance(self.underlayer, scapy.layers.inet6.IPv6) or isinstance(self.underlayer, scapy.layers.inet6._IPv6ExtHdr):
ck = scapy.layers.inet6.in6_chksum(socket.IPPROTO_TCP, self.underlayer, p)
p = p[:16]+struct.pack("!H", ck)+p[18:]
else:
warning("No IP underlayer to compute checksum. Leaving null.")
return p 示例2: post_build
# 需要导入模块: from scapy import utils [as 别名]
# 或者: from scapy.utils import checksum [as 别名]
def post_build(self, p, pay):
p += pay
l = self.len
if l is None:
l = len(p)
p = p[:4]+struct.pack("!H",l)+p[6:]
if self.chksum is None:
if isinstance(self.underlayer, IP):
if self.underlayer.len is not None:
ln = self.underlayer.len-20
else:
ln = len(p)
psdhdr = struct.pack("!4s4sHH",
inet_aton(self.underlayer.src),
inet_aton(self.underlayer.dst),
self.underlayer.proto,
ln)
ck=checksum(psdhdr+p)
p = p[:6]+struct.pack("!H", ck)+p[8:]
elif isinstance(self.underlayer, scapy.layers.inet6.IPv6) or isinstance(self.underlayer, scapy.layers.inet6._IPv6ExtHdr):
ck = scapy.layers.inet6.in6_chksum(socket.IPPROTO_UDP, self.underlayer, p)
p = p[:6]+struct.pack("!H", ck)+p[8:]
else:
warning("No IP underlayer to compute checksum. Leaving null.")
return p 示例3: post_build
# 需要导入模块: from scapy import utils [as 别名]
# 或者: from scapy.utils import checksum [as 别名]
def post_build(self, p, pay):
p += pay
dataofs = self.dataofs
if dataofs is None:
dataofs = 5+((len(self.get_field("options").i2m(self,self.options))+3)//4)
p = p[:12]+bytes([(dataofs << 4) | (p[12])&0x0f])+p[13:]
if self.chksum is None:
if isinstance(self.underlayer, IP):
if self.underlayer.len is not None:
ln = self.underlayer.len-20
else:
ln = len(p)
psdhdr = struct.pack("!4s4sHH",
inet_aton(self.underlayer.src),
inet_aton(self.underlayer.dst),
self.underlayer.proto,
ln)
ck=checksum(psdhdr+p)
p = p[:16]+struct.pack("!H", ck)+p[18:]
elif conf.ipv6_enabled and isinstance(self.underlayer, scapy.layers.inet6.IPv6) or isinstance(self.underlayer, scapy.layers.inet6._IPv6ExtHdr):
ck = scapy.layers.inet6.in6_chksum(socket.IPPROTO_TCP, self.underlayer, p)
p = p[:16]+struct.pack("!H", ck)+p[18:]
else:
warning("No IP underlayer to compute checksum. Leaving null.")
return p 示例4: post_build
# 需要导入模块: from scapy import utils [as 别名]
# 或者: from scapy.utils import checksum [as 别名]
def post_build(self, pkt, payload):
pkt += payload
# max_resp_code field is reserved (0)
if self.type in [IGMP_TYPE_V3_MEMBERSHIP_REPORT,]:
mrc = 0
else:
mrc = self.encode_float(self.max_resp_code)
pkt = pkt[:1] + chr(mrc) + pkt[2:]
if self.checksum is None:
chksum = checksum(pkt)
pkt = pkt[:2] + chr(chksum >> 8) + chr(chksum & 0xff) + pkt[4:]
return pkt 示例5: post_build
# 需要导入模块: from scapy import utils [as 别名]
# 或者: from scapy.utils import checksum [as 别名]
def post_build(self, pkt, pay):
if self.chksum == None:
pkt = pkt[:6] + struct.pack("!H", checksum(pkt)) + pkt[8:]
return pkt 示例6: _recv
# 需要导入模块: from scapy import utils [as 别名]
# 或者: from scapy.utils import checksum [as 别名]
def _recv(self, p, x=MTU):
if p is None:
return p
elif isinstance(p, IP):
# TODO: verify checksum
if p.src == self.dst and p.proto == socket.IPPROTO_IPV6:
if isinstance(p.payload, IPv6):
return p.payload
return p