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Diffstat (limited to 'scripts/external_libs/scapy-2.3.1/python2/scapy/arch/unix.py')
| -rw-r--r-- | scripts/external_libs/scapy-2.3.1/python2/scapy/arch/unix.py | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/scripts/external_libs/scapy-2.3.1/python2/scapy/arch/unix.py b/scripts/external_libs/scapy-2.3.1/python2/scapy/arch/unix.py new file mode 100644 index 00000000..151a08f5 --- /dev/null +++ b/scripts/external_libs/scapy-2.3.1/python2/scapy/arch/unix.py @@ -0,0 +1,205 @@ +## This file is part of Scapy +## See http://www.secdev.org/projects/scapy for more informations +## Copyright (C) Philippe Biondi <phil@secdev.org> +## This program is published under a GPLv2 license + +""" +Common customizations for all Unix-like operating systems other than Linux +""" + +import sys,os,struct,socket,time +from fcntl import ioctl +from scapy.error import warning +import scapy.config +import scapy.utils +import scapy.utils6 +import scapy.arch + +scapy.config.conf.use_pcap = 1 +scapy.config.conf.use_dnet = 1 +from pcapdnet import * + + + + + +################## +## Routes stuff ## +################## + + +def read_routes(): + if scapy.arch.SOLARIS: + f=os.popen("netstat -rvn") # -f inet + elif scapy.arch.FREEBSD: + f=os.popen("netstat -rnW") # -W to handle long interface names + else: + f=os.popen("netstat -rn") # -f inet + ok = 0 + mtu_present = False + prio_present = False + routes = [] + pending_if = [] + for l in f.readlines(): + if not l: + break + l = l.strip() + if l.find("----") >= 0: # a separation line + continue + if not ok: + if l.find("Destination") >= 0: + ok = 1 + mtu_present = l.find("Mtu") >= 0 + prio_present = l.find("Prio") >= 0 + continue + if not l: + break + if scapy.arch.SOLARIS: + lspl = l.split() + if len(lspl) == 10: + dest,mask,gw,netif,mxfrg,rtt,ref,flg = lspl[:8] + else: # missing interface + dest,mask,gw,mxfrg,rtt,ref,flg = lspl[:7] + netif=None + else: + rt = l.split() + dest,gw,flg = rt[:3] + netif = rt[5+mtu_present+prio_present] + if flg.find("Lc") >= 0: + continue + if dest == "default": + dest = 0L + netmask = 0L + else: + if scapy.arch.SOLARIS: + netmask = scapy.utils.atol(mask) + elif "/" in dest: + dest,netmask = dest.split("/") + netmask = scapy.utils.itom(int(netmask)) + else: + netmask = scapy.utils.itom((dest.count(".") + 1) * 8) + dest += ".0"*(3-dest.count(".")) + dest = scapy.utils.atol(dest) + if not "G" in flg: + gw = '0.0.0.0' + if netif is not None: + ifaddr = scapy.arch.get_if_addr(netif) + routes.append((dest,netmask,gw,netif,ifaddr)) + else: + pending_if.append((dest,netmask,gw)) + f.close() + + # On Solaris, netstat does not provide output interfaces for some routes + # We need to parse completely the routing table to route their gw and + # know their output interface + for dest,netmask,gw in pending_if: + gw_l = scapy.utils.atol(gw) + max_rtmask,gw_if,gw_if_addr, = 0,None,None + for rtdst,rtmask,_,rtif,rtaddr in routes[:]: + if gw_l & rtmask == rtdst: + if rtmask >= max_rtmask: + max_rtmask = rtmask + gw_if = rtif + gw_if_addr = rtaddr + if gw_if: + routes.append((dest,netmask,gw,gw_if,gw_if_addr)) + else: + warning("Did not find output interface to reach gateway %s" % gw) + + return routes + +############ +### IPv6 ### +############ + +def in6_getifaddr(): + """ + Returns a list of 3-tuples of the form (addr, scope, iface) where + 'addr' is the address of scope 'scope' associated to the interface + 'ifcace'. + + This is the list of all addresses of all interfaces available on + the system. + """ + + ret = [] + i = dnet.intf() + for int in i: + ifname = int['name'] + v6 = [] + if int.has_key('alias_addrs'): + v6 = int['alias_addrs'] + for a in v6: + if a.type != dnet.ADDR_TYPE_IP6: + continue + + xx = str(a).split('/')[0] + addr = scapy.utils6.in6_ptop(xx) + + scope = scapy.utils6.in6_getscope(addr) + + ret.append((xx, scope, ifname)) + return ret + +def read_routes6(): + f = os.popen("netstat -rn -f inet6") + ok = False + mtu_present = False + prio_present = False + routes = [] + lifaddr = in6_getifaddr() + for l in f.readlines(): + if not l: + break + l = l.strip() + if not ok: + if l.find("Destination") >= 0: + ok = 1 + mtu_present = l.find("Mtu") >= 0 + prio_present = l.find("Prio") >= 0 + continue + # gv 12/12/06: under debugging + if scapy.arch.NETBSD or scapy.arch.OPENBSD: + lspl = l.split() + d,nh,fl = lspl[:3] + dev = lspl[5+mtu_present+prio_present] + else: # FREEBSD or DARWIN + d,nh,fl,dev = l.split()[:4] + if filter(lambda x: x[2] == dev, lifaddr) == []: + continue + if 'L' in fl: # drop MAC addresses + continue + + if 'link' in nh: + nh = '::' + + cset = [] # candidate set (possible source addresses) + dp = 128 + if d == 'default': + d = '::' + dp = 0 + if '/' in d: + d,dp = d.split("/") + dp = int(dp) + if '%' in d: + d,dev = d.split('%') + if '%' in nh: + nh,dev = nh.split('%') + if scapy.arch.LOOPBACK_NAME in dev: + cset = ['::1'] + nh = '::' + else: + devaddrs = filter(lambda x: x[2] == dev, lifaddr) + cset = scapy.utils6.construct_source_candidate_set(d, dp, devaddrs, scapy.arch.LOOPBACK_NAME) + + if len(cset) != 0: + routes.append((d, dp, nh, dev, cset)) + + f.close() + return routes + + + + + + |