1 files changed, 175 insertions, 0 deletions
diff --git a/scripts/external_libs/scapy-2.3.1/python3/scapy/route.py b/scripts/external_libs/scapy-2.3.1/python3/scapy/route.py
new file mode 100644
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+++ b/scripts/external_libs/scapy-2.3.1/python3/scapy/route.py
@@ -0,0 +1,175 @@
+## 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
+
+"""
+Routing and handling of network interfaces.
+"""
+
+import socket
+from scapy.arch import read_routes,get_if_addr,LOOPBACK_NAME
+from scapy.utils import atol,ltoa,itom
+from scapy.config import conf
+from scapy.error import Scapy_Exception,warning
+
+##############################
+## Routing/Interfaces stuff ##
+##############################
+
+class Route:
+    def __init__(self):
+        self.resync()
+        self.s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.cache = {}
+
+    def invalidate_cache(self):
+        self.cache = {}
+
+    def resync(self):
+        self.invalidate_cache()
+        self.routes = read_routes()
+
+    def __repr__(self):
+        rt = "Network         Netmask         Gateway         Iface           Output IP\n"
+        for net,msk,gw,iface,addr in self.routes:
+            rt += "%-15s %-15s %-15s %-15s %-15s\n" % (ltoa(net),
+                                              ltoa(msk),
+                                              gw,
+                                              iface,
+                                              addr)
+        return rt
+
+    def make_route(self, host=None, net=None, gw=None, dev=None):
+        if host is not None:
+            thenet,msk = host,32
+        elif net is not None:
+            thenet,msk = net.split("/")
+            msk = int(msk)
+        else:
+            raise Scapy_Exception("make_route: Incorrect parameters. You should specify a host or a net")
+        if gw is None:
+            gw="0.0.0.0"
+        if dev is None:
+            if gw:
+                nhop = gw
+            else:
+                nhop = thenet
+            dev,ifaddr,x = self.route(nhop)
+        else:
+            ifaddr = get_if_addr(dev)
+        return (atol(thenet), itom(msk), gw, dev, ifaddr)
+
+    def add(self, *args, **kargs):
+        """Ex:
+        add(net="192.168.1.0/24",gw="1.2.3.4")
+        """
+        self.invalidate_cache()
+        self.routes.append(self.make_route(*args,**kargs))
+
+        
+    def delt(self,  *args, **kargs):
+        """delt(host|net, gw|dev)"""
+        self.invalidate_cache()
+        route = self.make_route(*args,**kargs)
+        try:
+            i=self.routes.index(route)
+            del(self.routes[i])
+        except ValueError:
+            warning("no matching route found")
+             
+    def ifchange(self, iff, addr):
+        self.invalidate_cache()
+        the_addr,the_msk = (addr.split("/")+["32"])[:2]
+        the_msk = itom(int(the_msk))
+        the_rawaddr = atol(the_addr)
+        the_net = the_rawaddr & the_msk
+        
+        
+        for i in range(len(self.routes)):
+            net,msk,gw,iface,addr = self.routes[i]
+            if iface != iff:
+                continue
+            if gw == '0.0.0.0':
+                self.routes[i] = (the_net,the_msk,gw,iface,the_addr)
+            else:
+                self.routes[i] = (net,msk,gw,iface,the_addr)
+        conf.netcache.flush()
+        
+                
+
+    def ifdel(self, iff):
+        self.invalidate_cache()
+        new_routes=[]
+        for rt in self.routes:
+            if rt[3] != iff:
+                new_routes.append(rt)
+        self.routes=new_routes
+        
+    def ifadd(self, iff, addr):
+        self.invalidate_cache()
+        the_addr,the_msk = (addr.split("/")+["32"])[:2]
+        the_msk = itom(int(the_msk))
+        the_rawaddr = atol(the_addr)
+        the_net = the_rawaddr & the_msk
+        self.routes.append((the_net,the_msk,'0.0.0.0',iff,the_addr))
+
+
+    def route(self,dest,verbose=None):
+        if type(dest) is list and dest:
+            dest = dest[0]
+        if dest in self.cache:
+            return self.cache[dest]
+        if verbose is None:
+            verbose=conf.verb
+        # Transform "192.168.*.1-5" to one IP of the set
+        dst = dest.split("/")[0]
+        dst = dst.replace("*","0") 
+        while True:
+            l = dst.find("-")
+            if l < 0:
+                break
+            m = (dst[l:]+".").find(".")
+            dst = dst[:l]+dst[l+m:]
+
+            
+        dst = atol(dst)
+        pathes=[]
+        for d,m,gw,i,a in self.routes:
+            aa = atol(a)
+            #Commented out after issue with virtual network with local address 0.0.0.0
+            #if aa == dst:
+            #    pathes.append((0xffffffff,(LOOPBACK_NAME,a,"0.0.0.0")))
+            if (dst & m) == (d & m):
+                pathes.append((m,(i,a,gw)))
+        if not pathes:
+            if verbose:
+                warning("No route found (no default route?)")
+            return LOOPBACK_NAME,"0.0.0.0","0.0.0.0" #XXX linux specific!
+        # Choose the more specific route (greatest netmask).
+        # XXX: we don't care about metrics
+        pathes.sort()
+        ret = pathes[-1][1]
+        self.cache[dest] = ret
+        return ret
+            
+    def get_if_bcast(self, iff):
+        for net, msk, gw, iface, addr in self.routes:
+            if (iff == iface and net != 0):
+                bcast = atol(addr)|(~msk&0xffffffff); # FIXME: check error in atol()
+                return ltoa(bcast);
+        warning("No broadcast address found for iface %s\n" % iff);
+
+#conf.route=Route()
+
+conf.route=None;
+_betteriface = None
+
+
+
+#XXX use "with"
+#_betteriface = conf.route.route("0.0.0.0", verbose=0)[0]
+
+if _betteriface != LOOPBACK_NAME:
+    conf.iface = _betteriface
+del(_betteriface)